Does Methylene Blue Increase Testosterone? What Research Actually Shows

Methylene blue has well-documented effects on mitochondrial function. It does not have documented effects on testosterone levels in healthy humans. Those are two different things, and at least two brands in the methylene blue space are currently blurring that line using research citations that do not exist.

• The biological connection is real, but the human evidence is not. The link between mitochondrial health and Leydig cell testosterone output is documented, but no study has tested whether methylene blue specifically influences that pathway in humans.
• The only real published study involves cisplatin-damaged rats. Methylene blue helped restore testosterone that the chemotherapy drug had suppressed, a protective effect under acute chemical damage, not evidence of baseline testosterone elevation.
• Two brands are citing fabricated research. Meraki Medicinal and Impact Health have published articles claiming methylene blue increases free testosterone by 15 to 24% in human males, citing studies that were never published anywhere.

Important: Methylene blue has documented interactions with serotonergic medications including SSRIs and MAOIs. Review the full adverse medications list before starting any methylene blue protocol.

Search interest around methylene blue has expanded well beyond its traditional medical applications. The compound now appears regularly in longevity podcasts, metabolic health discussions, and performance-focused communities online. In those spaces, testosterone keeps entering the conversation.

The curiosity makes sense. Testosterone is closely tied to energy, recovery, physical performance, and metabolic health. Any compound that influences cellular energy systems is naturally going to attract that kind of attention.

But understanding whether that attention is warranted requires looking at what the research actually documents, not what communities are speculating about.

Methylene blue is a legitimate compound with over a century of medical use and a growing body of serious research behind it. That research covers mitochondrial function, neuroprotection, cognitive performance, and cellular energy metabolism. It is genuinely interesting, and it is genuinely supported by peer-reviewed science.

But when a compound builds that kind of credibility, it also attracts claims that go beyond what the evidence supports. In the testosterone space specifically, some of those claims are not just unsupported. They are fabricated.

Testosterone production is controlled by the hypothalamic-pituitary-gonadal (HPG) axis, a hormonal signaling cascade that begins in the brain. The hypothalamus releases gonadotropin-releasing hormone (GnRH), which signals the pituitary gland to release luteinizing hormone (LH).

LH travels through the bloodstream to the testes, where it binds to receptors on Leydig cells and triggers testosterone synthesis.

Leydig cells are where testosterone is actually made. Inside these cells, mitochondria play a critical role: the enzyme CYP11A1, located on the inner mitochondrial membrane, converts cholesterol into pregnenolone, the first step in the steroid synthesis pathway.

From there, a series of enzymatic reactions in the smooth endoplasmic reticulum convert pregnenolone into testosterone. The entire process depends on mitochondrial energy and the transport of cholesterol into the mitochondria via a protein called StAR (steroidogenic acute regulatory protein).

Research does confirm that mitochondrial dysfunction impairs this process. Chronic stress reduces Leydig cell testosterone output by damaging mitochondria via disruption of the Atp5a1 protein (Xiong et al., 2022). Oxidative stress suppresses the expression of steroidogenic enzymes including CYP11A1 and 3beta-HSD (Monageng et al., 2023).

When Leydig cell mitochondria are compromised, testosterone production falls.

But none of this means that improving mitochondrial function will raise testosterone above its normal set point. Testosterone levels are regulated by the HPG axis through continuous feedback loops. Even if cellular energy in Leydig cells improved, the HPG axis would correct for any excess output. The system is not limited by Leydig cell ATP availability in healthy individuals. It is limited by hormonal signaling. Those are fundamentally different bottlenecks.

Methylene blue is a redox-cycling compound. It accepts electrons from NADH, one of the primary electron donors in cellular metabolism, and donates them further along the mitochondrial electron transport chain.

Specifically, it bypasses the first three complexes and delivers electrons to cytochrome c, which feeds into Complex IV. This alternative electron transfer pathway is particularly valuable when complexes I through III are dysfunctional or impaired, allowing cells to continue producing ATP under conditions that would otherwise cause energy failure.

The foundational research on this mechanism comes from Atamna et al. (2008), who demonstrated that methylene blue extends the lifespan of human fibroblast cells in culture, increases mitochondrial Complex IV activity by 30%, and enhances cellular oxygen consumption by 37 to 70%.

These effects were observed at nanomolar concentrations, consistent with the low-dose supplementation range used in human contexts.

Yang et al. (2017) and Rojas et al. (2012) extended this work to neurological contexts, showing that methylene blue's alternative electron transfer mechanism supports energy production in neurons and provides neuroprotective effects in models of oxidative stress and neurodegeneration.

The compound has also been studied for cognitive enhancement, with functional MRI research showing increased brain activity in memory-associated regions following administration. These are the documented effects of methylene blue: mitochondrial support, alternative electron transfer, antioxidant activity, neuroprotection, and cellular energy enhancement. These are real, peer-reviewed, and well supported. They are simply not the same thing as increasing testosterone, and no honest representation of the research suggests they are.

There is exactly one published study connecting methylene blue to testosterone levels. It was conducted by Gholami Jourabi et al. (2021), published in the peer-reviewed journal Andrologia, and it involved male Wistar rats given cisplatin, a chemotherapy drug known to cause severe testicular toxicity.

Cisplatin significantly suppressed the rats' testosterone levels and damaged sperm parameters. Methylene blue, administered as an antioxidant intervention, helped restore those suppressed levels and reversed some of the histopathological damage.

This is a meaningful study. It shows methylene blue has protective antioxidant effects in a model of acute chemical damage to reproductive tissue.

What it does not show, and what the authors do not claim, is that methylene blue increases testosterone above baseline in healthy individuals. The testosterone increase observed was a restoration of cisplatin-suppressed levels back toward normal, not an elevation beyond normal.

That distinction matters enormously and is exactly the kind of nuance that disappears when brands convert real research into marketing copy.

Outside of that single study, the research connecting methylene blue to hormone systems consists of one 1995 paper by Schreiber, published in Bratislava Medical Journal, which found methylene blue inhibited prolactin and cAMP increases in estrogenized male rats. That is the full scope of the MB-hormone research literature. Two animal studies, neither of which supports the testosterone-boosting claims being made.

When a compound builds real credibility in research circles, it attracts brands looking to borrow that credibility for claims the research does not actually support.

In the testosterone category specifically, we found two brands publishing articles that cite human clinical trials showing methylene blue increases free testosterone levels. Those trials do not exist. The citations are fabricated.

This matters for one simple reason: if you are making a decision about what to put in your body based on research, you deserve to know whether that research is real. We verified each citation independently. Here is what we found.

Meraki Medicinal published an article titled "Methylene Blue and Testosterone: What the Science Really Says About This Performance Booster."

The article claims methylene blue produces a 15 to 24% increase in free testosterone in adult males over 12 weeks, citing a study by Chen et al. (2023). It also cites six additional studies on Leydig cell enhancement, testicular blood flow, athletic performance, and post-exercise hormonal response.

We searched every one of these citations on PubMed, Google Scholar, and CrossRef. We attempted to follow every DOI.

None of them resolve. The journals named do not exist as described. The authors return no publication records anywhere in academic literature. These citations were not retracted or removed from databases. They were never in any database because they were never published.

The specific claim that methylene blue produces a 15 to 24% increase in free testosterone in healthy males over 12 weeks traces entirely to the Chen et al. (2023) citation above.

That study does not exist. There is no human clinical trial in any database showing methylene blue increases testosterone in healthy men.

You can verify this yourself. Search pubmed.ncbi.nlm.nih.gov for any of the author names paired with "methylene blue." You will find no results. Attempt to follow the DOIs at doi.org. They do not resolve.

Impact Health (takeimpact.com) published an article titled "Methylene Blue and Testosterone: Boost Energy & Vitality."

The article repeats the same core claims: that a 2023 study of adult males found daily methylene blue supplementation produced a 15 to 24% testosterone increase over 12 weeks, and that athletes using methylene blue showed 18% higher post-exercise testosterone compared to controls.

These are the same numbers from the Meraki Medicinal article, the same fabricated Chen et al. (2023) study, the same fabricated Johnson et al. (2024) athletic performance data.

Impact Health does not cite these sources by name. The claims simply appear as established fact with no attribution, giving readers no mechanism to trace them to anything.

No human clinical data showing methylene blue increases baseline testosterone exists in peer-reviewed literature as of the publication of this article. That includes every claim on the Impact Health website on this topic.

Every claim we make at Nutricel is traceable to a published, indexed, peer-reviewed source. Not a blog post. Not a citation that leads to a dead DOI. An actual study you can find, read, and verify independently.

This is not a marketing statement. It is a structural commitment that shapes how we write, how we formulate, and how we test.

Our products are manufactured in an NSF-certified GMP facility. Every batch is third-party tested by Eurofins, one of the world's leading analytical testing laboratories, and certificates of analysis are downloadable directly at nutricel.store/pages/certs, no request required.

We use USP-grade methylene blue, the same pharmaceutical standard used in clinical and medical settings, not the industrial or laboratory-grade material found in some competing products.

Methylene blue is a genuinely interesting compound with real, documented benefits. It does not need invented studies to be worth taking. If you want to know what the evidence actually supports, every article in our Insights library links to the specific research behind it, and every link resolves.

Methylene blue functions as a monoamine oxidase inhibitor and is contraindicated for certain individuals.

Do not take methylene blue if you are currently using:

• SSRIs, SNRIs, or MAOIs (risk of serotonin syndrome)
• Tramadol, linezolid, bupropion, trazodone, or other serotonergic medications
• Certain migraine medications and stimulants
• St. John's Wort, 5-HTP, or SAMe

It is also not for use by pregnant or nursing women, and individuals with G6PD deficiency should not take methylene blue, as it can trigger hemolytic anemia.

Review the full adverse medications list and consult your healthcare provider before starting methylene blue in any form.

Every Nutricel product uses USP-grade methylene blue, is manufactured in an NSF-certified cGMP facility in the United States, and is independently tested through Eurofins. The difference between them is what they are built to support alongside the methylene blue itself.

Blue Boost is Nutricel's core formula. If your focus is methylene blue itself and you want a clean, research-backed capsule built around absorption and cellular energy, this is it.

Blue Immune combines methylene blue with copper, NAC, grass-fed beef liver, and vitamins A, C, and E for cellular and immune function support.

Blue Shroom pairs methylene blue with six organic mushroom extracts including lion's mane, reishi, cordyceps, chaga, shiitake, and turkey tail.

Blue Renew is built around GlyNAC (glycine and N-acetyl cysteine), studied for supporting glutathione levels and brain function in aging populations.

Blue Remove combines zeolite, curcumin, and nattokinase for cellular detox, circulatory, and inflammation support.

Blue Liquid delivers USP-grade methylene blue in a precise dropper bottle for those who prefer liquid format and flexible dosing.

Methylene blue supports mitochondrial function. That is well established. The biological relationship between mitochondrial health and testosterone production in Leydig cells is also real, and worth understanding.

But connecting those two facts into a claim that methylene blue increases testosterone requires a bridge that does not exist in the published research, and at least two brands have responded to that gap by fabricating the bridge entirely.

The studies cited by Meraki Medicinal and repeated by Impact Health do not exist. They were not retracted. They were not inconclusive. They were never published.

The specific numbers being cited, a 15 to 24% free testosterone increase, an 18% post-exercise testosterone elevation, a 32% improvement in testicular blood flow, have no source. They were generated and presented as fact to sell a product.

If a brand's scientific credibility depends on citations no one can verify, that is the information you need. Before you make a decision based on research claims, take two minutes to check whether the studies being cited actually exist. We will always make that easy to do.

Methylene Blue and Testosterone / Reproductive Systems

Methylene Blue and Mitochondrial Function

Leydig Cells, Mitochondria, and Testosterone Synthesis

Fabricated Articles Referenced in This Report

How to Verify Research Citations