Methylene blue
the widest hype gap on this list
Marketing intensity 95 of 100. Evidence strength 20 of 100. Verdict: Severely overhyped.
A century-old medical dye with interesting mechanisms, almost no long-term human evidence for the biohacker claims, and real, specific dangers if you take antidepressants.
Does Methylene blue work? Benefits, claim by claim
Each claim is graded on the strength of human evidence — not how good the mechanism sounds, not how loud the marketing is.
-
Boosts cognition and memory in healthy people
LimitedOne small randomized fMRI study (Rodriguez 2016) showed brain-imaging changes and a ~7% memory-retrieval bump from a single low dose - a thin, acute signal, not proof of real-world benefit.
Sources -
Mitochondrial 'anti-aging' and longevity
WeakBuilt on cell and animal data plus mechanism. There are no long-term human trials showing it slows aging.
-
Prevents or treats Alzheimer's
WeakClinical trials of the related compound TRx0237 disappointed; it cannot be claimed to prevent Alzheimer's.
Who should take Methylene blue?
Honestly, no clear case for healthy people yet - and the interaction with common antidepressants makes casual use genuinely risky.
Methylene blue dosage
No recommendation - the safety flags, especially with antidepressants, matter far more than any dose.
This describes what studies used — not personalized advice.
Methylene blue side effects & safety
High concern- Serotonin syndrome risk with SSRIs, SNRIs, and MAOIs - methylene blue is a potent MAO-A inhibitor. This combination can be dangerous and even fatal.
- G6PD deficiency is a contraindication - it can trigger hemolytic anemia.
- Flips from antioxidant to pro-oxidant at higher doses.
- Non-pharmaceutical-grade product can carry contaminants; purity is a real concern.
Is Methylene blue worth it?
This is the entry to be most skeptical of. The marketing is maxed out; the long-term human evidence is near zero. If you take an antidepressant, the risk here is not theoretical. Don't self-experiment with this one.
No product attached yet. When we add a buy link it will only ever point to a third-party-tested product, clearly disclosed — and it will never change this grade.
Last reviewed: 15 June 2026 by Supplement Hype Editorial. How we grade →
This page reports the state of evidence for Methylene blue. It is not medical advice and not a recommendation to take anything. Talk to a doctor or pharmacist before starting, stopping, or combining supplements.
Methylene blue: quick answers
Does Methylene blue actually work?
A century-old medical dye with interesting mechanisms, almost no long-term human evidence for the biohacker claims, and real, specific dangers if you take antidepressants.
Is Methylene blue overhyped?
On our Hype Gap meter it scores 95/100 for marketing intensity versus 20/100 for evidence. Verdict: Severely overhyped.
What about the claim "Prevents or treats Alzheimer's"?
Graded Weak: Clinical trials of the related compound TRx0237 disappointed; it cannot be claimed to prevent Alzheimer's.
Is Methylene blue safe? What are the side effects?
Safety concern level: high. Serotonin syndrome risk with SSRIs, SNRIs, and MAOIs - methylene blue is a potent MAO-A inhibitor. This combination can be dangerous and even fatal. This is general information, not medical advice — check with a doctor or pharmacist.
How much Methylene blue should you take?
No recommendation - the safety flags, especially with antidepressants, matter far more than any dose. This describes what studies used and is not personalized advice.