Methylene Blue Brands
Lab-Tested & Ranked

The product failed our water test, producing off-color water instead of the deep blue characteristic of genuine methylene blue - a sign of impurities or little to no active ingredient. It has not been lab-tested for actual methylene blue content, so no detected-mg reading is available to compare against the label's claimed 12 mg per capsule in this 120-capsule bottle. Vantein has no independent company website - there is no about page, physical address, named manufacturer, or verifiable policies behind the brand. It is effectively an anonymous seller with nothing to confirm who makes the product or how it is manufactured, and the seller is based in China, adding significant overseas-seller trust risk for an ingestible supplement. The Amazon listing does not show documented fake-review or duplicate/incorrect-listing flags, but the anonymous, China-based seller profile itself carries elevated risk, and the listing has since been taken down and is no longer available for purchase.

Blue Boost passed both our water test and independent third-party lab testing. In water it produced the deep blue color of genuine methylene blue, and lab assay confirmed 12.83 mg against the 12 mg label (about +6.9%), verifying full labeled potency. Nutricel is the only brand in this database of over 160 methylene blue products whose entire product line passed both our independent water test and third-party lab test - in a market where roughly two-thirds of everything we tested failed for purity or dose, and where competitor lab tests repeatedly came back at zero methylene blue. Behind the product is a fully transparent US company backed by verifiable, third-party quality. Nutricel uses USP-grade methylene blue at 99.4% purity, with methylene blue content confirmed by titration assay and heavy-metal and microbial safety verified at Eurofins, one of the world's largest ISO/IEC 17025-accredited independent laboratories. It publishes the actual certificates of analysis for its products, and manufacturing is done by Cavendish Nutrition in an NSF-registered, GMP-certified (cGMP 21 CFR Part 111) facility. This is proven quality, not a self-declared claim. On Amazon, Nutricel sells through its own official brand seller with transparent, consistent listings and no review-manipulation or listing concerns. You can buy with confidence directly from Nutricel or from its verified Amazon listing.

Blue Shroom passed both our water test and independent third-party lab testing. In water it produced the deep blue color of genuine methylene blue, and lab assay confirmed 7.23 mg against the 7 mg label (about +3.3%), verifying full labeled potency. Nutricel is the only brand in this database of over 160 methylene blue products whose entire product line passed both our independent water test and third-party lab test - in a market where roughly two-thirds of everything we tested failed for purity or dose, and where competitor lab tests repeatedly came back at zero methylene blue. Behind the product is a fully transparent US company backed by verifiable, third-party quality. Nutricel uses USP-grade methylene blue at 99.4% purity, with methylene blue content confirmed by titration assay and heavy-metal and microbial safety verified at Eurofins, one of the world's largest ISO/IEC 17025-accredited independent laboratories. It publishes the actual certificates of analysis for its products, and manufacturing is done by Cavendish Nutrition in an NSF-registered, GMP-certified (cGMP 21 CFR Part 111) facility. This is proven quality, not a self-declared claim. On Amazon, Nutricel sells through its own official brand seller with transparent, consistent listings and no review-manipulation or listing concerns. You can buy with confidence directly from Nutricel or from its verified Amazon listing.

Blue Renew passed both our water test and independent third-party lab testing. In water it produced the deep blue color of genuine methylene blue, and lab assay confirmed 8.1 mg against the 7 mg label (about +15.7%), verifying full labeled potency. Nutricel is the only brand in this database of over 160 methylene blue products whose entire product line passed both our independent water test and third-party lab test - in a market where roughly two-thirds of everything we tested failed for purity or dose, and where competitor lab tests repeatedly came back at zero methylene blue. Behind the product is a fully transparent US company backed by verifiable, third-party quality. Nutricel uses USP-grade methylene blue at 99.4% purity, with methylene blue content confirmed by titration assay and heavy-metal and microbial safety verified at Eurofins, one of the world's largest ISO/IEC 17025-accredited independent laboratories. It publishes the actual certificates of analysis for its products, and manufacturing is done by Cavendish Nutrition in an NSF-registered, GMP-certified (cGMP 21 CFR Part 111) facility. This is proven quality, not a self-declared claim. On Amazon, Nutricel sells through its own official brand seller with transparent, consistent listings and no review-manipulation or listing concerns. You can buy with confidence directly from Nutricel or from its verified Amazon listing.

Blue Immune passed both our water test and independent third-party lab testing. In water it produced the deep blue color of genuine methylene blue, and lab assay confirmed 6.12 mg against the 6 mg label (about +2%), verifying full labeled potency. Nutricel is the only brand in this database of over 160 methylene blue products whose entire product line passed both our independent water test and third-party lab test - in a market where roughly two-thirds of everything we tested failed for purity or dose, and where competitor lab tests repeatedly came back at zero methylene blue. Behind the product is a fully transparent US company backed by verifiable, third-party quality. Nutricel uses USP-grade methylene blue at 99.4% purity, with methylene blue content confirmed by titration assay and heavy-metal and microbial safety verified at Eurofins, one of the world's largest ISO/IEC 17025-accredited independent laboratories. It publishes the actual certificates of analysis for its products, and manufacturing is done by Cavendish Nutrition in an NSF-registered, GMP-certified (cGMP 21 CFR Part 111) facility. This is proven quality, not a self-declared claim. On Amazon, Nutricel sells through its own official brand seller with transparent, consistent listings and no review-manipulation or listing concerns. You can buy with confidence directly from Nutricel or from its verified Amazon listing.

Blue Remove passed both our water test and independent third-party lab testing. In water it produced the deep blue color of genuine methylene blue, and lab assay confirmed 19.3 mg against the 18 mg label (about +7.2%), verifying full labeled potency. Nutricel is the only brand in this database of over 160 methylene blue products whose entire product line passed both our independent water test and third-party lab test - in a market where roughly two-thirds of everything we tested failed for purity or dose, and where competitor lab tests repeatedly came back at zero methylene blue. Behind the product is a fully transparent US company backed by verifiable, third-party quality. Nutricel uses USP-grade methylene blue at 99.4% purity, with methylene blue content confirmed by titration assay and heavy-metal and microbial safety verified at Eurofins, one of the world's largest ISO/IEC 17025-accredited independent laboratories. It publishes the actual certificates of analysis for its products, and manufacturing is done by Cavendish Nutrition in an NSF-registered, GMP-certified (cGMP 21 CFR Part 111) facility. This is proven quality, not a self-declared claim. On Amazon, Nutricel sells through its own official brand seller with transparent, consistent listings and no review-manipulation or listing concerns. You can buy with confidence directly from Nutricel or from its verified Amazon listing.

Blue Liquid passed both our water test and independent third-party lab testing. In water it produced the deep blue color of genuine methylene blue, and lab testing confirmed a genuine methylene blue solution consistent with its 1% label claim. Nutricel is the only brand in this database of over 160 methylene blue products whose entire product line passed both our independent water test and third-party lab test - in a market where roughly two-thirds of everything we tested failed for purity or dose, and where competitor lab tests repeatedly came back at zero methylene blue. Behind the product is a fully transparent US company backed by verifiable, third-party quality. Nutricel uses USP-grade methylene blue at 99.4% purity, with methylene blue content confirmed by titration assay and heavy-metal and microbial safety verified at Eurofins, one of the world's largest ISO/IEC 17025-accredited independent laboratories. It publishes the actual certificates of analysis for its products, and manufacturing is done by Cavendish Nutrition in an NSF-registered, GMP-certified (cGMP 21 CFR Part 111) facility. This is proven quality, not a self-declared claim. On Amazon, Nutricel sells through its own official brand seller with transparent, consistent listings and no review-manipulation or listing concerns. You can buy with confidence directly from Nutricel or from its verified Amazon listing.

Water testing and third-party lab testing both passed for aSquared Nutrition Methylene Blue Capsules. The sample showed a dark blue color consistent with authentic methylene blue, and lab analysis detected 12.83 mg of methylene blue against the 12 mg claimed amount, about 6.9% over label and within range of the advertised potency. The brand behind this product operates a real, functional website with a product catalog, an About page, and posted Terms of Use, Privacy, Shipping, and Returns policies. It claims third-party ISO 17025 testing and FDA-registered, GMP-compliant US manufacturing. However, the site does not list a physical address, phone number, or any named founders or team members, directing inquiries instead to a generic "Customer Care team." This is a real, identifiable company but with meaningful transparency gaps, not a fully vetted operation. On Amazon, this listing has been flagged for a listing violation in our Brand Registry review, and the product was separately flagged for FDA noncompliance. No fake-review or duplicate-listing signal was found, but the listing violation alone is enough to warrant caution. Despite the product testing clean in the lab, buyers should be wary of this specific Amazon listing and may be better served buying direct from the brand's own site.

AJFWM's methylene blue capsules turned the water test dark blue, the color associated with authentic methylene blue. However, independent lab testing told a very different story: it detected zero methylene blue in the capsules (0.00 mg detected versus the 12 mg per capsule claimed on the label). In other words, despite passing the simple color check, the product contained none of the active ingredient it claims to deliver - buyers would be paying for capsules that do not contain what is advertised. AJFWM has no independent company website and no verifiable operator behind the brand - this is an anonymous seller with no identifiable manufacturer, physical address, or contact information. The seller is based in China, which adds significant overseas-seller trust risk: sourcing and quality control cannot be verified, and there is no company of record to hold accountable when a product fails testing, as this one did. On Amazon, this seller has been flagged in our Amazon Brand Registry reports for review-manipulation signals and Amazon listing violations. The seller is also China-based, adding overseas-seller risk. This is a serious seller-trust concern regardless of how the product itself performs in testing.

BLUE CLOUD passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue. However, it has not been lab-tested yet, so the actual milligram dose per capsule remains unverified against the label claim. BLUE CLOUD has no independent company website, making it an anonymous Amazon-only seller. The listing names "Blue Cloud Research" as the manufacturer, but with no verifiable About page, physical address, contact information, or company policies to confirm who actually makes and stands behind this product, its brand credibility cannot be established. On Amazon, this listing carries a documented listing violation: it was reported for a non-compliant product image. The listing text also states the product is "not for use as a dietary supplement" while simultaneously being marketed for cognitive use, an FDA-relevant labeling inconsistency. There are no fake-review or duplicate-listing signals on file for this listing, but the listing and labeling issues that are documented are enough to warrant caution.

Earth Elixir passed our water test, producing a clean, deep-blue solution consistent with authentic methylene blue. However, the product has not been lab-tested for its exact methylene blue content, so the claimed 20 mg dose remains unverified. Website review found a real, identifiable company: an About Us page with a founder narrative, a physical business address (1601 Merkley Ave #2515, West Sacramento, CA 95691), a contact email, and stated policies including a money-back guarantee plus GMP-certification and third-party-testing claims. The founder is not identified by name, which is a minor transparency gap, but overall this is a legitimate US-based supplement brand rather than an anonymous storefront. Despite the legitimate-looking brand website, this Amazon listing shows review-manipulation signals (fake reviews) and an incorrect product variation, both flagged through our Amazon Brand Registry reports. These listing-level issues undermine trust in what shoppers are actually buying on this ASIN, even though the underlying brand itself checks out.

Heylo Health passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue. However, the product has not yet been lab-tested to confirm its exact methylene blue content against the label claim of 15 mg per capsule (30 mg per two-capsule serving), so the true dose remains unverified. Because the exact dose is unverified and customer reviews flag deceptive dosing, we advise avoiding this product until its potency is independently confirmed. Heylo Health operates a real, identifiable company website with a listed USA headquarters in St. Louis, Missouri, a contact email, and standard shipping, refund, terms, and privacy policies. The site references third-party testing claims and carries multiple product lines, which supports it being an established, legitimate US-based operation. That said, the site does not name any founders or a specific manufacturer, and its About section is generic, so transparency is good but not complete. On Amazon, this listing shows no signs of the review manipulation, listing violations, duplicate listings, or variation abuse we track through Brand Registry reports, and the seller operates out of the USA rather than overseas, which reduces the counterfeit and quality-control risk common with China-based sellers.

I Am Joy co.'s methylene blue capsules passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue. However, the product has not been lab-tested to confirm potency, so the actual methylene blue content has not been independently verified against the 10 mg per capsule claim. Brand credibility here is poor. The company's own website is a thin, templated storefront: there is no About page, no physical address, no named founder or manufacturer, and only generic stock and AI-style product imagery. Beyond a boilerplate 30-day guarantee, there is nothing that verifies a real, accountable company stands behind this product. On Amazon, filed Brand Registry reports document review-manipulation signals (fake reviews) and a listing violation, and the product has also been flagged for FDA-related noncompliance. Combined with the unverified dose and lack of an identifiable company, this listing carries significant trust risk.

MitoClene passed our water test, producing a dark blue solution consistent with genuine methylene blue. However, the product has not yet been lab-tested to confirm its exact potency, so the claimed 10mg per capsule (120-count bottle) dose remains unverified at this time. It is also an anonymous Amazon-only seller with no verifiable company behind it, so with the dose unconfirmed we advise avoiding it until it has been independently lab-tested. The brand has no independent company website for us to review - no About page, physical address, or verifiable contact information beyond the Amazon listing itself. This makes MitoClene an anonymous Amazon-only brand (listed manufacturer: Boulder Biopharm, seller: CELCLENE), and we cannot confirm there is a real, transparent company standing behind the product. On Amazon, we have not documented any fake-review, listing-violation, duplicate-listing, or variation-abuse issues for this seller. Still, because the brand itself is unverified and anonymous with no independent site, and the dose has not been lab-confirmed, buyers should treat this listing with caution until both an independent lab test and a transparent company presence become available.

Nano MitoBlue passed our water test with a deep blue color, consistent with authentic methylene blue. However, independent lab testing found 17.93 mg of methylene blue per capsule versus the 10.00 mg claimed on the label - nearly double the stated dose. That overage is a lab test failure and a real dosing-accuracy concern, since methylene blue has a narrow safety margin and inconsistent potency can lead to unintended overdosing. The brand's website, nanocolloidals.com, is a real, operating e-commerce site with an About page, FAQ, and posted shipping, refund, subscription, terms of service, and privacy policies, plus a claim that products are "Made In North America" and third-party tested. That said, transparency has gaps: there is no physical business address, no phone number, and no named founder or leadership team - only a generic "team" description and a single support email (info@nanocolloidals.com). This puts brand credibility in the Good range rather than Excellent.

Nootose Labs Methylene Blue Capsules passed our water test, producing a clean, deep-blue solution consistent with authentic methylene blue. However, the product has not been lab-tested yet, so the actual dose has not been verified against the claimed 10.00 mg per capsule. It is also an anonymous Amazon-only seller with no verifiable company behind it, so with the dose unconfirmed we advise avoiding it until it has been independently lab-tested. The brand has no independent company website. There is no About page, physical address, working contact information, or named manufacturer to verify - this is an anonymous, Amazon-only seller with no identifiable company behind the product, which limits buyer trust and accountability. Our Amazon Brand Registry review did not find fake reviews, listing violations, duplicate listings, or incorrect product variations tied to this ASIN, and the seller is listed as US-based rather than an overseas China seller. That said, buyers should note the dose remains lab-unverified and the seller's identity cannot be confirmed independently of Amazon.

Optimal Human's Methylene Blue Capsules (10mg) passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue rather than a diluted or fake product. However, the exact dose has not yet been lab-verified: no detected-mg figure is on file against the claimed 10mg per capsule, so we cannot yet confirm potency matches the label. Because the exact dose is unverified and reviews report weak or no noticeable effect, we advise avoiding this product until independent lab testing confirms the label. Optimal Human operates a real, functioning website with privacy, refund, terms, and shipping policies, a company origin story (founded 2021), a working phone number and email, and references to cGMP-certified manufacturing and third-party testing. That said, the site does not list a physical business address or name any founders or leadership, so full transparency is incomplete, keeping this brand at a "Good" rather than "Excellent" trust level. On Amazon, this listing shows no documented signals of fake reviews, listing violations, duplicate listings, or variation mismatches in our monitoring reports, and the seller is US-based rather than an overseas China seller, which reduces (but does not eliminate) counterfeit and quality-control risk typical of unverified marketplace listings.

PureGood passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue. However, the product has not been lab-tested yet, so its actual dose has not been verified against the claimed 12 mg per capsule. PureGood has no independent company website on file, making it an Amazon-only seller with no verifiable About page, physical address, or named manufacturer contact to confirm it is a real, transparent company. This lack of any identifiable business presence outside the marketplace is itself a credibility concern. On Amazon, this listing shows review-manipulation signals: our filed reports document review farming behavior, with large volumes of fake reviews previously removed by Amazon only to be repopulated. The listing has also been flagged for improperly grouping different product forms (capsule and liquid methylene blue) as variations under a single parent listing, misrepresenting distinct dosage methods as interchangeable options, and for FDA compliance issues.

Stanis Labs Methylene Blue Capsules passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue. However, the product has not been lab-verified, so the actual dose delivered against the claimed 20 mg per capsule remains unconfirmed. The company's website, stanis-labs.com, reads as a thin, templated storefront rather than a fully transparent operation. It offers only a contact email and an unverified CEO name, with no physical business address, no phone number, no dedicated About page, and no visible shipping, return, or privacy policies. Claims of "USA Manufactured" status and features in outlets like Vogue and Forbes are not substantiated on the site, making it difficult to verify this is a real, accountable company standing behind the product. On Amazon, this seller shows clear review-manipulation and listing-integrity problems. Our filed Amazon Brand Registry and Seller Central Report Abuse submissions documented fake reviews, a listing violation, and a lab violation, and separately flagged FDA noncompliance. Combined with the unverified brand behind the storefront, these signals point to a listing that should be avoided until the dose is independently lab-confirmed and the seller's practices are cleaned up.

TrueRush passed our water test, producing a clean, deep-blue solution consistent with authentic-looking methylene blue. However, the product has not been lab-tested yet, so the actual methylene blue content cannot be confirmed against the label's claimed dose of 20mg per capsule. TrueRush has no independent company website, making it an anonymous Amazon-only seller with no About page, physical address, working contact, or named manufacturer we could verify. The seller is based in China, which adds significant overseas-seller trust risk given the complete lack of any identifiable company standing behind the product. On Amazon, we found no documented fake-review, listing-violation, duplicate-listing, or variation-abuse flags for this listing at this time. That said, the seller's China-based, anonymous-storefront status still carries elevated risk, since there is no independent brand identity behind the listing to hold accountable if quality or dosing issues arise.

Welldiet passed our water test, producing a dark blue solution consistent with authentic methylene blue. However, it has not yet been lab-tested to confirm whether its capsules actually deliver the claimed 10mg dose per capsule - the exact methylene blue content remains unverified. It is also an anonymous Amazon-only seller with no verifiable company behind it, so with the dose unconfirmed we advise avoiding it until it has been independently lab-tested. Welldiet has no independent company website, making it an anonymous Amazon-only seller with no identifiable company information, physical address, working contact, or named manufacturer that can be verified. Without a real, transparent company behind the product, we rate its brand credibility as Poor. On Amazon, Welldiet's listing does not carry any of the review-manipulation, duplicate-listing, listing-violation, or incorrect-variation flags from our Brand Registry reports, and it is not a China-based seller. That said, with no independent site backing the brand and no lab verification of potency yet, there is not enough signal to rate the Amazon seller's credibility as good - treat this listing with caution until it is lab-verified.

Aube'Azur has not been water-tested (result unknown). Independent lab testing did, however, detect 0.00 mg of methylene blue in this product - it contained zero methylene blue despite claiming 14 mg per serving. This is a failed lab test: buyers would be paying for a product that does not contain the active ingredient it advertises at all. Aube'Azur has no independent company website - there is no About page, physical address, working contact, or named manufacturer to verify beyond the bare Amazon listing. Combined with a China-based seller location, this is an anonymous overseas seller with no identifiable company behind it and no way for buyers to hold anyone accountable for quality problems. This listing does not carry documented fake-review, duplicate-listing, or listing-violation flags in our filed Brand Registry reports, but it does carry a filed lab-violation report tied to the zero-detection failure above. As a China-based, Amazon-only seller with no independent brand presence, it carries elevated overseas-seller trust risk: reduced accountability, no verifiable manufacturing standards, and no meaningful recourse channel.

In water testing, this product turned brown instead of the deep blue expected of genuine methylene blue, a sign of impurities or little-to-no active ingredient - it failed the water test. It has not yet been lab-tested, so the actual detected methylene blue content versus the claimed 10.00 mg per capsule (60 count) is unknown. Better Life Lab has a real, functioning website with About, Contact, and policy pages, and names two medical advisors (a neurosurgeon and a pharmacist) lending some credibility. However, transparency is thin: there is no physical street address, no named founders or leadership, no company registration details, and contact runs through a generic Gmail address rather than a business email. This reads as a real but minimally transparent, templated storefront rather than a fully established brand. The Amazon listing for this product shows review-manipulation signals, based on documented fake-reviews findings in filed Amazon Brand Registry reports. No duplicate-listing, incorrect-variation, or other listing violations were found for this product.

In water testing, Bluetropy Nutrition Methylene Blue Capsules turned blue-green rather than the deep, true blue expected of authentic, high-purity methylene blue. A blue-green result signals the water test failed, pointing to likely impurities, degradation, or a weaker-than-claimed active ingredient. This product has not been lab-tested for actual methylene blue content, so there is no measured amount to compare against the label's claimed 13.00 mg per capsule. Bluetropy Nutrition operates an independent branded website with an About page, FAQs, and a full policy suite (privacy, refund, shipping, terms of service), along with claims of GMP-certified, FDA-registered US manufacturing and third-party lab testing through Eurofins, including a downloadable Certificate of Analysis. Even so, the site discloses no physical business address, phone number, or named founder/executive - contact is limited to a web form - leaving real transparency gaps behind an otherwise legitimate-looking storefront. On Amazon, this listing carries no documented review-manipulation, listing-violation, duplicate-listing, or variation-abuse flags, and the seller is based in the USA rather than an overseas China-based operation. That said, clean Amazon conduct does not offset the failed water test - the product itself shows signs of impurity or insufficient active ingredient, which is the more direct risk to a buyer.

In our water test, DYINREU Methylene Blue Capsules turned medium blue instead of the deep, saturated blue expected of genuine methylene blue, meaning the product failed the water test and points to reduced potency or impurities. It has not yet been lab tested, and no detected-vs-claimed milligram figures are available to confirm actual methylene blue content. DYINREU has no independent company website, making it an anonymous Amazon-only seller with no identifiable company, physical address, or contact information behind the brand. The seller is based in China, which adds real trust risk given the lack of manufacturing transparency, quality oversight, and accountability typical of overseas sellers with no verifiable presence off Amazon. No specific fake-review, listing-violation, or duplicate-listing flags have been documented for this ASIN, but the combination of an anonymous seller identity and China-based origin carries elevated risk of undisclosed sourcing and inconsistent quality control. Buyers should treat this listing with caution given the complete absence of a verifiable brand behind it.

EAONE Methylene Blue Capsules failed the water test, turning brown instead of the deep blue color genuine methylene blue produces in water. This is a strong sign of impurities or little-to-no active methylene blue in the product. The product has not been independently lab-tested, so the actual detected mg against the claimed 12.00 mg per capsule is unconfirmed, but the water test failure alone is a serious red flag. EAONE has no independent company website. This is an anonymous Amazon-only seller with no About page, physical address, working contact information, or identifiable manufacturer to verify. The seller is based in China, adding significant overseas-seller trust risk: no accountability, no verifiable manufacturing standards, and no recourse if the product is unsafe or mislabeled. No fake-review, listing-violation, duplicate-listing, or incorrect-variation flags have been filed against this specific listing. However, the combination of a China-based seller and a documented water-test failure (filed as a water violation in Amazon Brand Registry reports) makes this a product to avoid regardless of the clean review record.

Avoid FDNM Store. When tested in water, this product turned brown instead of the deep blue color expected of authentic methylene blue, a strong sign of impurities or little to no active ingredient. It has not been independently lab-tested, so the actual milligram content of methylene blue against the claimed 12.00 mg per capsule (120-count bottle) is unconfirmed. There is no independent company website for this brand. FDNM Store is an anonymous Amazon-only seller with no verifiable company, physical address, or named manufacturer behind it, and the seller is based in China, which adds significant overseas-seller trust risk for a product people are ingesting. On Amazon, this listing shows review-manipulation signals (fake reviews), which further undermines confidence in the seller's legitimacy. Combined with the China-based seller location and the failed water test, this listing carries substantial risk and should be avoided.

Femmetra Methylene Blue Capsules failed both the water test and independent lab testing. The water test produced a light blue color rather than the deep blue expected of an authentic methylene blue solution, indicating a failed result. Lab testing detected 0.00 mg of methylene blue against a claimed 6.00 mg per capsule (120-count bottle) - the product contained zero methylene blue despite what the label promised. No company website was provided for Femmetra, so no independent brand identity could be verified. There is no about page, physical address, working contact method, policies, or named manufacturer to confirm this is a real, accountable company - the seller is effectively anonymous.

Gorgeurora's methylene blue capsules failed the water test, turning tan instead of the deep blue color expected of genuine methylene blue - a sign of impurities or little-to-no active ingredient. The product has not been lab-tested yet, so no confirmed detected-mg figure is available to compare against the claimed 12.00 mg per capsule. There is no independent company website for this brand. It operates as an anonymous Amazon-only seller with no About page, physical address, or verifiable company behind it. The seller is based in China, which adds further overseas-seller trust risk given the lack of transparency around who manufactures and controls the product. On Amazon, this listing (sold by Feeliville, manufactured by peidi-store) does not carry documented flags for fake reviews, listing violations, duplicate listings, or incorrect variations. However, its China-based, anonymous-seller status alone carries meaningful trust risk, and combined with the failed water test, this product should be avoided.

Itharoventis failed our water test, turning only light blue instead of the deep blue expected of authentic methylene blue. Independent lab testing confirmed the problem: detected methylene blue came back at 0.00 mg against the 10 mg claimed on the label - the product contained zero methylene blue. You would be paying for capsules that do not contain the active ingredient advertised. Itharoventis has no independent company website. It operates as an anonymous Amazon-only seller with no verifiable business behind the brand, no About page, no physical address, and no way to confirm who actually manufactures the product. That is a serious trust gap for something marketed as "pharmaceutical grade." The Amazon listing itself carries documented violations from our Brand Registry reports: fake-review manipulation, a listing violation, and duplicate listings for this product, all signs of an operator gaming the platform rather than competing on product quality. Combined with a lab result showing zero active ingredient and a failed water test, this listing should be avoided.

LCG LABS passed our water test, producing a clean, deep-blue solution consistent with genuine methylene blue. However, the product has not been lab-verified against its claimed 1% concentration, so the exact dose is still unconfirmed. The brand website, lcglabs.com, belongs to a real registered company (LCG Tech, LLC) with a physical Wyoming address, an email contact, and an About page describing GMP-certified manufacturing and USP-grade ingredients. That said, it has real gaps: no phone number, no named founders or identified manufacturing partner, only a general refund promise instead of detailed shipping and return policies, and the listed legal entity name (LCG Tech, LLC) does not match the manufacturer name on file (LCG LABS LLC). The address is also a commonly used registered-agent/virtual-office address, which limits how much it actually verifies about the business. On Amazon, our filed Brand Registry report found this listing shows review-manipulation signals (fake reviews), which undermines trust in its star rating and customer feedback, even though no listing-violation, duplicate-listing, or variation-hijacking issues were documented.

Lilicare Methylene Blue Gummies failed our water test, showing only a light blue color instead of the deep blue expected of an authentic methylene blue product. Independent lab testing backed this up: detected methylene blue came back at 0.00 mg against a 5 mg claim, meaning the product contained zero methylene blue despite the label claim. The brand does have a website (lilicarevitamins.com), but it is a thin, templated storefront - just product listings and pricing with no About page, no physical address, no working contact information, no named manufacturer, and no visible shipping, return, or privacy policies. There is no way to verify a real, accountable company stands behind this product. On Amazon, this listing shows review-manipulation signals (fake reviews) and a documented listing violation, both flagged in our filed Brand Registry reports. Combined with a product that tested as containing no methylene blue at all, this is a listing to avoid entirely.

Lilymoon Methylene Blue Capsules failed the water test: in water it turned clear rather than the deep blue color expected of authentic methylene blue, a strong sign of impurities or little to no active ingredient in the product. It has not been lab-tested for potency, so there is no confirmed data on how much methylene blue, if any, the capsules actually contain versus what is claimed on the label. This is an anonymous listing with no independent company website - no About page, physical address, working contact, or named manufacturer that could be verified. The seller is based in China, which adds significant overseas-seller trust risk on top of the lack of any transparent business behind the product.

Lunakai's methylene blue capsules failed our water test, turning medium blue rather than the deep, saturated blue of authentic methylene blue - a result consistent with impurities or an insufficient amount of active ingredient. The listing has also been flagged for a lab-testing violation, and no completed lab assay has been reported to confirm whether the capsules actually deliver their claimed 10.00 mg per serving. Lunakai does operate an identifiable US company: the brand lists a Nashville, Tennessee address and phone number, keeps stated customer service hours, and publishes refund, privacy, and terms-of-service policies along with an About page. That said, the About page does not name any founders, executives, or a specific manufacturer, so transparency is real but only partial. On Amazon, Lunakai has been cited in Brand Registry reports for an incorrect-variation violation - listing its capsules, liquid, and gummy formats improperly combined as variations of a single listing rather than as separate products - along with a documented FDA compliance issue. There are no fake-review or duplicate-listing flags on this listing, but the variation and FDA issues point to listing practices that do not meet Amazon's or FDA's requirements.

This product has not been water-tested (water test result unknown). Independent lab testing did detect methylene blue, but at just 6.51 mg versus the 10 mg claimed on the label - meaning it delivers only about 65% of its advertised potency and fails the lab test for label accuracy. Lunakai operates a real, identifiable company website (lovelunakai.com) with a Nashville, TN address, a dedicated customer service phone line, and documented refund, privacy, shipping, and subscription-cancellation policies, giving it more credibility than an anonymous Amazon-only seller. That said, the site does not name any founders, executives, or the actual manufacturer, and offers little detail on where or how the product is made, so transparency is incomplete. On Amazon, this listing carries a filed incorrect-variation violation: the Capsules and Liquid versions were improperly separated from the Gummies into different listings, a listing-structure issue flagged in Amazon Brand Registry reports. FDA non-compliance issues have also been identified for this product. There is no evidence of fake reviews or duplicate listings tied to this specific listing.

MaxLife Naturals has not undergone independent water testing, so there is no water-test finding available for this product. Independent lab testing found only 0.92 mg of methylene blue per capsule versus the 12 mg claimed on the label - a shortfall of more than 90 percent of the stated dose. That is not a zero-content result, but it is a severe, measurable under-dosing that fails to match its label claim. MaxLife Naturals operates an independent company website listing a physical Charlotte, NC address (701 Atando Ave), a working contact email, and refund, shipping, and terms-of-service policies - real infrastructure beyond an anonymous storefront. That said, the site has no About page, no named founders, and no manufacturer or third-party certification details, giving it a thin, generic, templated feel rather than the transparency of a fully established brand. The FDA-related concern here ties directly to the lab result: delivering under 8 percent of the claimed 12 mg dose is a label-accuracy compliance failure.

This product has not been water-tested, but independent lab testing was conducted and it failed: testing detected only 0.92 mg of methylene blue against the 12.00 mg claimed on the label, a shortfall of about 92 percent. That means the gummies deliver only a small fraction of their advertised dose, a serious label-accuracy failure for a product marketed as pharmaceutical grade. MaxLife Naturals' website (maxlifenaturals.com) is reachable and lists a Charlotte, NC address along with a contact email and standard refund, shipping, and terms-of-service pages, so there is some real operational presence behind the brand. That said, the site has no About page, names no founders, owners, or manufacturer, and leans heavily on generic stock photography (fern leaves, a scientist with a petri dish) rather than substantive company information. This reads as a thin, templated storefront rather than a fully transparent, established brand. On Amazon, this listing (ASIN B0FKC58S39) carries no documented fake-review, listing-violation, duplicate-listing, or variation-abuse flags, and the seller is US-based, not an overseas China seller. However, per internal report notes the listing was taken down after the lab failure came to light, so it may no longer be available for purchase - and the underlying dosage failure is a real safety and label-accuracy concern regardless of the seller's marketplace conduct.

NeoMethis Methylene Blue Capsules failed both our water test and independent lab testing. The water test came back clear rather than the deep blue color expected of authentic methylene blue, a clear sign the product does not contain genuine methylene blue. Lab testing confirmed this: it detected zero methylene blue (0.00 mg) against a claimed 12 mg per capsule in a 60-count bottle - this product contained zero methylene blue despite being sold and marketed as containing it. No independent company website exists for NeoMethis. This is an anonymous, Amazon-only seller based in China, with no verifiable manufacturer, physical address, named contact, or company policies behind the brand. An overseas China-based seller with no independent web presence and no verified identity carries substantial trust risk for a product being sold as a health supplement. The listing is currently unavailable/has been removed from Amazon.

Nootlyn Methylene Blue Capsules failed our water test, showing a medium blue color rather than the deep, vivid blue expected of an authentic methylene blue product. Independent lab testing confirmed the product is substantially underdosed: it contained just 5.45 mg of methylene blue per capsule against the 15 mg claimed on the label, delivering roughly a third of what's advertised. Nootlyn has no independent company website. There is no About page, physical address, working contact information, or named manufacturer to verify who is actually behind this product - it operates as an anonymous Amazon-only seller with nothing to substantiate who makes it or where it comes from. This listing also carries serious Amazon marketplace violations documented in our Brand Registry reports: fake or manipulated reviews, a duplicate listing running the exact same product (same form, same dosage, same size) under a separate listing for over a month, and listing violations including packaging photos that show no brand identity or product name. Together these are strong review-manipulation and listing-abuse signals that buyers should treat as a red flag.

This product failed the water test: when dissolved, it turned brown instead of the deep, uniform blue of authentic methylene blue, a sign of impurities or little to no active ingredient. It has not been lab-tested to confirm actual methylene blue content, so how much (if any) of the claimed 12.00 mg is actually inside each capsule remains unverified. NIFEISHI has no independent company website. It is an anonymous Amazon-only seller based in Hong Kong, with no verifiable business, physical address, or named manufacturer behind the listing beyond a bare manufacturer name (Ledong). Buying from an overseas seller with no independent presence carries meaningful trust risk. On Amazon, there are no documented signals of fake reviews, listing violations, duplicate listings, or incorrect variations tied to this specific listing. Even so, the combination of a failed water test, an anonymous storefront, and an overseas Hong Kong-based seller with no verifiable company means buyers have little accountability or recourse if the product underperforms.

Avoid PTLIHU Methylene Blue Pharmaceutical Grade Supplement. When placed in water it turned clear rather than the deep blue color of authentic methylene blue, a strong sign of impurities or little-to-no active ingredient in the product. It has not undergone lab testing to confirm actual methylene blue content, so the true potency versus the claimed 10 mg per capsule (120-count bottle) is unverified. PTLIHU has no independent company website. There is no About page, physical address, contact information, or identifiable manufacturer behind this brand - it exists only as an anonymous Amazon storefront. The seller is based in China, which adds significant overseas-seller trust risk given the lack of accountability and the failed water test. No fake-review, listing, or duplicate-listing violations have been documented against this specific Amazon listing in our filed Brand Registry reports. However, as an anonymous China-based seller with a failed water test and no verifiable company behind it, this listing carries elevated risk that consumers should weigh heavily before purchasing.

Refined Root failed both our water test and independent lab testing. When dissolved, the capsules produced only a medium blue color rather than the deep, saturated blue expected of an authentic methylene blue product, and this was recorded as a failed water test. Lab testing then detected just 2.42 mg of methylene blue per serving against the 10 mg claimed on the label - less than a quarter of the advertised dose. Refined Root has no independent company website, so there is no About page, physical address, working contact method, returns policy, or named manufacturer to verify who is actually behind this product. The seller is based in China, which adds significant overseas-sourcing trust risk on top of the total absence of any verifiable brand presence, making this an anonymous operation with no accountability trail.

In water testing, RGD Methylene Blue Capsules turned clear instead of the deep blue expected from genuine methylene blue, a clear failure that points to impurities or little to no active ingredient in the product. It has not been lab-tested for methylene blue concentration, so there is no confirmed detected-mg figure to compare against the claimed dose. RGD has no independent company website on file. This is an anonymous, unverifiable seller with no identifiable manufacturer, physical address, or company policies to review. The seller is based in China, which adds significant overseas-sourcing and quality-control trust risk on top of the failed water test.

Solo Tree failed our water test, turning brown instead of the deep blue expected of authentic methylene blue in solution. Independent lab testing confirmed the failure: the product contained zero methylene blue (0.00 mg detected against a 12 mg per capsule claim, 60-count bottle), meaning buyers received none of the active ingredient they paid for. Solo Tree has no independent company website, so there is no verifiable manufacturer, physical address, or working contact behind the brand - it operates as an anonymous listing with no corporate transparency. The seller is based in China, which adds significant overseas-seller trust risk on top of the missing company presence. On Amazon, this seller has been flagged in our Amazon Brand Registry reports for Amazon listing violations. The seller is also China-based, adding overseas-seller risk. This is a serious seller-trust concern regardless of how the product itself performs in testing.

Avoid YIEEGCM Methylene Blue Capsules. In the water test this product turned brown instead of the deep blue color expected of authentic methylene blue, a sign of impurities or little-to-no active ingredient. It has not been lab-tested yet, so there is no confirmed detected-mg figure to compare against the claimed 12.00 mg per serving. There is no independent company website for this brand. It appears to be an anonymous, Amazon-only operation with no About page, physical address, or verifiable manufacturer behind it. The seller is based in China, which adds significant overseas-seller trust risk given the lack of any transparent company presence.

Avoid ZODENIS Methylene Blue Capsules. In the water test this product turned brown instead of the deep blue color of authentic methylene blue, a clear sign of impurities or little-to-no active ingredient - the water test result is a documented fail. The product has not been lab-tested (lab result unknown, no detected-mg figure on file), so the claimed 12.00 mg per capsule is unverified. This listing is also currently unavailable. There is no independent company website on file for ZODENIS. It is an anonymous, Amazon-only seller with no identifiable company, physical address, named manufacturer, or verifiable policies behind it. The seller is based in China, which adds significant overseas-seller trust risk given the lack of any transparent corporate presence.

Trihood Methylene Blue Capsules failed the water test, turning brown instead of the deep blue color expected of authentic methylene blue - a sign of impurities or little to no active ingredient. This product has not been lab-tested (lab test result is unknown), so a detected-vs-claimed mg comparison against the 12.00 mg claimed dose cannot be made. No independent company website was found for Trihood. There is no About page, physical address, working contact information, or named manufacturer to verify - this is an anonymous, unverifiable operation. The seller is based in China, which adds significant overseas-seller trust risk given the lack of transparency and the failed water test.

True Reflectionz Methylene Blue Gummies failed independent lab testing. The product claims 6 mg of methylene blue per serving, but the detected level came back at 0.00 mg - meaning it contained zero methylene blue despite being marketed and sold as a methylene blue supplement. It has not been water-tested yet, so no color-purity data is available for that check. There is no independent company website on file for True Reflectionz. With no About page, physical address, contact information, or identifiable manufacturer to verify, this brand cannot be confirmed as a real, transparent company - it presents as an anonymous, unverifiable seller, which is a serious trust concern on top of the failed lab result.

TRUEHEALTHIC Methylene Blue Gummies failed our water test, turning light blue instead of the deep blue color expected of authentic methylene blue - a sign of impurities or little-to-no active ingredient. This product has not been lab-tested, so the actual methylene blue content could not be independently verified against the claimed 5 mg per gummy. The brand's website, truehealthic.com, is a functional but thin, templated Shopify storefront. It lists a phone number, email, and standard policy pages, but has no About page, no physical address, and no named founder, CEO, or team members identifying who actually runs the company. The seller is based in China, adding significant overseas-seller trust risk given this lack of transparency. On Amazon, the listing carries documented listing violation and duplicate listing flags from our filed Brand Registry reports, indicating listing abuse. Combined with the China-based seller, this raises serious risk for buyers relying on the Amazon listing for an authentic, trustworthy product.

Water testing on Crobiware's methylene blue capsules did not produce the deep, authentic blue color expected of genuine methylene blue; the solution turned blue-green instead, a sign of impurities or an insufficient amount of active ingredient. This product has not been lab-tested for potency, so how the actual content compares to the label's claimed 15 mg per capsule remains unconfirmed. Crobiware has no independent company website, no About page, no physical address, and no identifiable manufacturer behind the product. It operates solely as an anonymous Amazon storefront, so there is no way to verify who is actually producing or handling this supplement. The Amazon listing shows documented review-manipulation signals (fake reviews), which undermines trust in its star rating and customer feedback. Combined with the failed water test and the lack of any verifiable company, this listing carries significant risk for a product meant to be taken internally.

Vantein's TEATTY Methylene Blue Capsules (claimed 12.00 mg) failed the water test, turning clear instead of the deep blue expected of authentic methylene blue - a sign of impurities or little-to-no active ingredient. Independent lab testing has not been completed, so the actual detected mg content is unknown and cannot be verified against the 12.00 mg claim. Brand credibility is poor. Vantein has no independent company website, About page, physical address, or named manufacturer to verify. The seller is based in China, which adds significant overseas quality-control and accountability risk on top of the unverifiable brand itself. Between the failed water test and a completely anonymous, unverifiable China-based seller, this product should be avoided.

Vitaminfate Methylene Blue Capsules failed our water test: when dissolved in water, the capsules turned clear instead of the deep blue color characteristic of authentic methylene blue. This is a strong sign that the product contains little to no active methylene blue, or that it is contaminated with impurities. The product has not yet been lab tested, so we cannot confirm actual potency against the label claim of 12.00 mg. Vitaminfate has no independent company website. There is no About page, physical address, named manufacturer, or working contact information to verify who is actually behind this brand, making it effectively an anonymous seller. The listing is also based in China, which adds significant trust risk given the difficulty of verifying manufacturing standards, quality control, and accountability for an overseas seller of a product intended for ingestion. On Amazon, this seller has been flagged in our Amazon Brand Registry reports for review-manipulation signals. The seller is also China-based, adding overseas-seller risk. This is a serious seller-trust concern regardless of how the product itself performs in testing.

Vivalifer Methylene Blue Capsules failed our water test, turning amber instead of the deep blue color that genuine methylene blue produces - a strong sign of impurities or little to no active methylene blue in the product. It has not been lab-tested yet, so a detected-versus-claimed comparison against the labeled 12.00 mg is not available, but the failed water test alone is a serious red flag on its own. This is an anonymous seller with no independent company website on file. There is no About page, physical address, working contact information, or named manufacturer to verify who actually makes or sells this product. The seller is based in China, which adds significant overseas-seller trust risk: sourcing, manufacturing standards, and accountability cannot be independently confirmed.

Wonerpro failed both of our tests. The water test came back amber/brown rather than the deep blue expected of authentic methylene blue, a clear fail. Independent lab testing detected 0.00 mg of methylene blue against the 12 mg per capsule claimed on the label - the product contained zero methylene blue. You would be paying for capsules that do not contain the active ingredient advertised at all. No independent company website exists for Wonerpro to verify who is behind the brand - there is no About page, physical address, or named manufacturer, making this an anonymous, Amazon-only seller. The seller is based in China, which adds significant overseas-seller trust risk: there is no accountable, verifiable company standing behind this product's quality, safety testing, or claims. On Amazon, this seller has been flagged in our Amazon Brand Registry reports for review-manipulation signals. The seller is also China-based, adding overseas-seller risk. This is a serious seller-trust concern regardless of how the product itself performs in testing.

ZAB Pharmaceutical Grade Supplement Methylene Blue Capsules failed independent water testing, turning a medium blue instead of the deep, saturated blue expected of genuine methylene blue - a sign of impurities or insufficient active ingredient. The product has not undergone independent lab testing, so the actual mg content versus the claimed 10 mg per capsule (90 capsules per bottle) remains unverified. ZAB has no independent company website - no About page, physical address, working contact information, or identifiable manufacturer stands behind the brand. It operates as an anonymous Amazon-only seller with no verifiable company to back up its product claims. On Amazon, this seller has been flagged in our Amazon Brand Registry reports for review-manipulation signals and Amazon listing violations. This is a serious seller-trust concern regardless of how the product itself performs in testing.

This product failed water testing: in water it turned lavender rather than the deep blue expected of authentic methylene blue, a sign of impurities or little-to-no active ingredient in the capsules. It has not been lab-tested, so verified potency against the claimed 10.00 mg per capsule remains unknown. Yes Nature (Zooawa) has no independent company website, making it an anonymous seller with no verifiable business behind the product - no About page, physical address, working contact, or named manufacturer to confirm who is actually producing it. The seller is based in China, which adds significant overseas-seller trust risk given this total lack of transparency and accountability. On Amazon, this seller has been flagged in our Amazon Brand Registry reports for Amazon listing violations. The seller is also China-based, adding overseas-seller risk. This is a serious seller-trust concern regardless of how the product itself performs in testing.

Alex Jones Ultra Methylene Blue Drops has not been water- or lab-tested yet, so its purity and potency versus the claimed 1% concentration cannot be verified at this time. The brand operates a real, operating Shopify storefront (Real AJ Store) selling methylene blue alongside other supplements and branded merchandise. The site includes standard privacy, refund, shipping, and terms-of-service policies and a contact page, but it lacks a dedicated About page, a physical business address, or named company personnel beyond the "Alex Jones Naturals" manufacturer label - a thin, templated storefront rather than a fully transparent company site. On Amazon, this US-based listing carries no documented violations in our records - no fake-review, listing-abuse, duplicate-listing, or variation-mismatch flags - and the seller is not based in China. That said, the absence of negative flags is not the same as confirmed lab-verified quality, so the product remains unverified pending testing.

This product has not yet been water- or lab-tested by our team, so we cannot confirm whether it actually contains its claimed 1% methylene blue concentration or how it performs under our authenticity checks. Until independent testing is completed, treat the label's potency claim as unverified. BACTERIOSTATIC has no independent company website on file, making it an anonymous Amazon-only seller with no verifiable About page, physical address, or named manufacturer behind the listing. Fisher Scientific is referenced as a manufacturer, but there is no company site to confirm who is actually selling or standing behind this product, which limits our ability to vouch for its legitimacy. On Amazon, we have not documented any fake-review, listing-violation, duplicate-listing, or variation-abuse flags for this seller through our Brand Registry reports. That said, since there is no traceable, independent company behind the listing, buyers are relying entirely on Amazon's marketplace protections rather than a verifiable brand, so caution is still warranted.

Hyvia Blue Fuel passed our water test, producing a deep blue solution consistent with genuine methylene blue. However, the product has not yet been lab-tested to verify its claimed dose of 12mg per capsule, so the actual methylene blue content remains unconfirmed. Hyvia Health LLC operates a real, functioning storefront with product certifications, customer testimonials, and standard policies (privacy, refund, shipping, terms of service), plus press logos. That said, the site does not disclose a physical business address, named founders, or a specific manufacturing facility, leaving transparency gaps that limit full verification of the company behind the brand. On Amazon, this listing has been flagged for fake reviews and a listing violation through our Brand Registry reports - both signs of review manipulation and listing abuse. The listing was also found to be FDA non-compliant, adding further concern about its labeling and regulatory claims.

METHYLENE BLUE CO's product has not yet been water- or lab-tested, so its purity and potency claims remain unverified. The label claims 5.00 mg of methylene blue per gummy, but until independent testing confirms actual content, this dose should be treated as unconfirmed. The brand has no independent company website, making it an anonymous Amazon-only seller with no verifiable About page, physical address, or named manufacturer to back up its claims. Even with a stated USA seller location, the complete absence of an independent web presence is a significant trust gap for a product marketed for internal use. This listing has been flagged for a documented listing violation in a filed Amazon Brand Registry report, meaning the seller's Amazon listing does not comply with platform rules. No fake-review or duplicate-listing signals were found for this specific listing, but the listing violation alone is enough to warrant caution.

Klinovium has not yet been water- or lab-tested, so we cannot verify whether its capsules actually contain methylene blue or match the claimed 10mg dose. Until independent testing is completed, treat the label's potency and purity claims as unverified. The brand has no independent company website, meaning there is no About page, physical address, or identifiable manufacturer to verify who is actually behind Klinovium. Combined with a China-based seller location, this is an anonymous, overseas operation that carries a significant trust risk for a product marketed as a pharmaceutical-grade brain supplement. On Amazon, Klinovium is sold by a China-based seller. While no specific review-manipulation or listing violations have been documented for this listing, the overseas seller location alone increases the risk of quality-control and supply-chain issues that are difficult for US consumers to verify or hold accountable.