Methylene Blue Dosage Chart by Body Weight, Product, and Drops
Written by: Sam Carlson
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Published on August 25th, 2026
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Updated September 4, 2026
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Time to read 13 min
Quick Answer
Methylene blue research and hospital use measure amounts per kilogram of body weight (mg/kg). For a 70 kg (154 lb) adult, 0.5 mg/kg is 35 mg, 1 mg/kg is 70 mg, and 2 mg/kg is 140 mg. Supplements use flat amounts instead: one 12 mg Blue Boost capsule is about 0.17 mg/kg at 70 kg. The tables below cover body weight, mg per Nutricel product, and drops to mg.
- Capsule mg is fixed and label-stated. Blue Boost 12 mg, Blue Immune 6 mg, Blue Renew 7 mg per capsule, Blue Shroom 7 mg, Blue Remove 8 mg per 6-capsule serving, all verified on the live product pages.
- The liquid is a 1% solution, or 10 mg per mL. Using the standard 20 drops per mL dropper convention, one drop is approximately 0.5 mg. A 2% solution doubles that to roughly 1 mg per drop.
- This is unit-conversion, not a personal dosing recommendation. The body-weight table converts published research and FDA-label figures; it does not tell you how much to take. Follow the product label's Suggested Use section and talk to your healthcare provider about how much fits you.
Important: The FDA label for methylene blue injection (Provayblue) carries a boxed warning about serotonin syndrome with serotonergic medications, including SSRIs and MAOIs. Review the full adverse medications list before use.
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Methylene Blue Dosage Chart by Body Weight
Research papers and the FDA injection label describe methylene blue amounts in milligrams per kilogram of body weight (mg/kg). The table converts those published figures into milligrams at common body weights, and shows what one 12 mg capsule works out to for comparison. It is a conversion table, not a dosing chart.
| Body weight | 0.5 mg/kg | 1 mg/kg | 2 mg/kg | 4 mg/kg | One 12 mg capsule |
|---|---|---|---|---|---|
| 50 kg (110 lb) | 25 mg | 50 mg | 100 mg | 200 mg | ~0.24 mg/kg |
| 60 kg (132 lb) | 30 mg | 60 mg | 120 mg | 240 mg | ~0.20 mg/kg |
| 70 kg (154 lb) | 35 mg | 70 mg | 140 mg | 280 mg | ~0.17 mg/kg |
| 80 kg (176 lb) | 40 mg | 80 mg | 160 mg | 320 mg | ~0.15 mg/kg |
| 90 kg (198 lb) | 45 mg | 90 mg | 180 mg | 360 mg | ~0.13 mg/kg |
| 100 kg (220 lb) | 50 mg | 100 mg | 200 mg | 400 mg | ~0.12 mg/kg |
What the columns mean:
- 0.5 to 4 mg/kg is the range one research group described as "low dose" (Rodriguez et al., Brain Imaging and Behavior, 2017). Most of that work was done in cells and animals, not in people taking supplements.
- 1 to 2 mg/kg is the intravenous dose on the FDA label for treating methemoglobinemia in a hospital (Provayblue, DailyMed).
- StatPearls describes a markedly increased risk of toxicity above about 7 mg/kg.
Supplements use flat amounts, not mg/kg. Most methylene blue capsules list 10 to 30 mg each, which is roughly 0.15 to 0.4 mg/kg for a 70 kg adult. There is no FDA-established supplement amount for methylene blue. How much you use is a decision for you and your healthcare provider, starting from the Suggested Use section on your label.
Methylene Blue mg Chart by Nutricel Product
Every Nutricel capsule has a fixed milligram amount of USP-grade methylene blue printed on its Supplement Facts panel. That number stays the same however many capsules a label suggests, so it is the cleanest way to compare products. We checked every row below against the live product pages.
| Product | mg per capsule | Label serving size | Total mg per label serving | Approx. liquid equivalent |
|---|---|---|---|---|
| Blue Boost | 12 mg | 1 capsule | 12 mg per capsule | ~24 drops of the 1% liquid |
| Blue Immune | 6 mg | Varies -- see product label | 6 mg per capsule | ~12 drops of the 1% liquid |
| Blue Renew | 7 mg | 2 capsules | 14 mg (2 capsules x 7 mg) | ~28 drops of the 1% liquid |
| Blue Shroom | 7 mg | Varies -- see product label | 7 mg per capsule | ~14 drops of the 1% liquid |
| Blue Remove | ~1.3 mg | 6 capsules | 8 mg per serving | ~16 drops of the 1% liquid |
| Blue Liquid (1% solution) | 10 mg per mL | Measured with dropper -- amount set by you/your provider | Varies by amount used | 20 drops = 1 mL = 10 mg |
Two products (Blue Immune, Blue Shroom) do not list a single fixed capsule count per serving on their label; for those, we point you to your healthcare provider for how many to take. The mg per capsule is still fixed either way.
Drops to Milligrams: The 1% Liquid Conversion Chart
A 1% solution means 1 gram of methylene blue dissolved in every 100 mL of solution, which works out to 10 mg per mL. That part is simple percentage math. How many drops that comes to depends on the dropper.
The convention shared by the United States Pharmacopeia, British Pharmacopoeia, and European Pharmacopoeia is that a standard medicinal dropper delivers 1 mL of a water-based solution in about 20 drops. That puts one drop at roughly 0.05 mL. Multiply that by the liquid's 10 mg per mL strength and one drop works out to approximately 0.5 mg of methylene blue.
| Drops | Approx. volume | Approx. mg |
|---|---|---|
| 1 drops | ~0.05 mL | ~0.5 mg |
| 5 drops | ~0.25 mL | ~2.5 mg |
| 10 drops | ~0.5 mL | ~5 mg |
| 15 drops | ~0.75 mL | ~7.5 mg |
| 20 drops | ~1 mL | ~10 mg |
| 24 drops | ~1.2 mL | ~12 mg (matches one Blue Boost capsule) |
| 30 drops | ~1.5 mL | ~15 mg |
| 36 drops | ~1.8 mL | ~18 mg |
| 40 drops | ~2 mL | ~20 mg |
Why this is an approximation: a drop is a practical unit, not a lab-exact one. Actual drop size depends on the dropper tip, the liquid's viscosity and surface tension, and temperature, so treat every mg figure above as close, not exact. It is also why you should use the same dropper the same way each time.
Reverse Lookup: Target mg to Drops
The chart above starts from drops and works out to mg. This one runs the other direction: if you already have a milligram amount in mind, whether a round number or the figure on one of our capsule labels, here is the matching drop count on a 1% solution.
| Target mg | Approx. Drops (1% Solution) | Matches |
|---|---|---|
| 1 mg | ~2 drops | - |
| 2.5 mg | ~5 drops | - |
| 5 mg | ~10 drops | - |
| 6 mg | ~12 drops | Blue Immune (1 capsule) |
| 7 mg | ~14 drops | Blue Shroom (1 capsule) |
| 10 mg | ~20 drops | - |
| 8 mg | ~16 drops | Blue Remove (6-capsule serving) |
| 12 mg | ~24 drops | Blue Boost (1 capsule) |
| 14 mg | ~28 drops | Blue Renew (2-capsule serving) |
The same caveat applies: real drop size depends on the dropper, the liquid, and temperature, so these are close estimates for comparison.
If Your Liquid Is a Different Concentration
If your bottle is not 1%, the charts above will be off, so use the table below instead. Our Blue Liquid is 1%, but 0.5% and 2% solutions are both sold. They look the same in the bottle, and only the label tells you which one you have.
| Concentration | mg per mL | Approx. mg per Drop | Drops for ~10 mg |
|---|---|---|---|
| 0.5% | 5 mg/mL | ~0.25 mg | ~40 drops |
| 1% (Nutricel Blue Liquid) | 10 mg/mL | ~0.5 mg | ~20 drops |
| 2% | 20 mg/mL | ~1 mg | ~10 drops |
The same drop count is not the same dose across products. 10 drops from a 2% solution delivers roughly the same amount as 20 drops from a 1% solution. Check the strength printed on your bottle before you use any chart on this page, and do not assume two bottles match because the drop count looks familiar.
How to Read the Math on Your Label
People searching for a "methylene blue dosage chart by weight" usually want a table that tells them how much to take based on how much they weigh. The body-weight table above does something narrower: it converts published mg/kg figures into milligrams so you can see where a supplement amount sits. It does not tell you what to take. Adjusting an amount for body weight is a clinical call that depends on your health history, your medications, and your goals, and a healthcare provider is the one who can weigh those together.
What a chart can do reliably is unit conversion, and that is what the tables above are. The mg-per-capsule figures do not shift based on your body size; a Blue Boost capsule is 12 mg whether you weigh 130 pounds or 230 pounds. The liquid's 0.5 mg per drop does not shift either, as long as you have checked the strength on your bottle. The only part that should be personal is how much you use, and that comes from the Suggested Use section on the label and a conversation with your healthcare provider.
For how people usually think about starting low and adjusting slowly with the liquid, see our methylene blue drops dosing guide. That article covers the reasoning; this page is the reference chart to come back to once you know the math.
Who This Is Not For
Do not take methylene blue in any form, at any dose, if you are currently using:
- SSRIs, SNRIs, MAOIs, or any other serotonergic medication (the FDA label warns of serotonin syndrome)
- Known G6PD deficiency (the Provayblue label warns of hemolytic anemia)
- Pregnancy or nursing, without your healthcare provider's guidance
Review the full adverse medications list and our methylene blue drug interactions guide, and consult your healthcare provider before starting methylene blue in any form or amount.
The Bottom Line
The numbers are simple once you separate the fixed math from the personal decision.
- Every Nutricel capsule's mg amount is fixed and verified against the live product label: Blue Boost 12 mg, Blue Immune 6 mg, Blue Renew 7 mg per capsule, Blue Shroom 7 mg, Blue Remove 8 mg per 6-capsule serving.
- The 1% liquid solution is 10 mg per mL, and a standard 20 drops-per-mL dropper puts one drop at roughly 0.5 mg. A 2% solution doubles that; a 0.5% solution halves it.
- Drop-based mg figures are approximate, since drop size varies slightly with the dropper, the liquid, and temperature.
- There is no bodyweight-based dosing chart here on purpose. That decision belongs with your healthcare provider, not a formula.
- Always follow the Suggested Use section on the product you bought, confirm the labeled concentration before converting drops, and review the adverse medications list before starting.
Frequently Asked Questions
References
Drop-to-volume conversion standard
- Drop (unit) -- summarizes the United States Pharmacopeia, British Pharmacopoeia, and European Pharmacopoeia convention defining a standard medicinal dropper as delivering 1 mL of an aqueous solution in 20 drops (1 drop = 0.05 mL), used as the basis for the drops-to-mg chart above.
Nutricel product labels (verified live, August 25, 2026)
- Blue Boost product page -- 12 mg USP-grade methylene blue per capsule, serving size 1 capsule.
- Blue Immune product page -- 6 mg USP-grade methylene blue per capsule.
- Blue Renew product page -- 7 mg USP-grade methylene blue per capsule, serving size 2 capsules.
- Blue Shroom product page -- 7 mg USP-grade methylene blue per capsule.
- Blue Remove product page -- 8 mg USP-grade methylene blue per 6-capsule serving.
- Blue Liquid (methylene blue 1% solution) product page -- 1% solution, 10 mg per mL, 4 oz (120 mL) bottle.
Related Nutricel Insights articles
- Methylene Blue Drops Dosing Guide -- the prose explainer that walks through starting low and adjusting with the liquid format.
- What Medications Interact With Methylene Blue? A Safety Guide
- Full Adverse Medications List
About the Author
Sam Carlson, Marketing Developer at Nutricel
Sam is a marketing developer at Nutricel who writes the Nutricel Insights series to help our customers understand methylene blue and make informed choices, translating the published research into plain language. Sam is not a medical professional, and these articles are intended as education rather than medical advice. Every figure in this piece is tied to the studies listed in the references, and you should always speak with your healthcare provider before starting any supplement.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for general education and is not medical advice. Consult your healthcare provider before beginning any supplement, especially if you take medications, are pregnant or nursing, or have a medical condition.
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