Methylene Blue
MB / Methylthioninium Chloride
A century-old pharmaceutical dye repurposed as a mitochondrial optimizer. At low doses (0.5–1 mg), methylene blue acts as an alternative electron carrier in the mitochondrial electron transport chain, bypassing damaged Complex I and III to donate electrons directly to cytochrome c. This can increase oxygen consumption up to 70% and ATP production by ~30%. Follows a hormetic (inverted U-shaped) dose-response curve — low doses enhance function while high doses are harmful. Practitioners describe it as a 'secret weapon' for mitochondrial support.
Half-life
5–6.5 hours
Typical Dose
0.5–2 mg/kg (low dose for cognitive; higher for medical)
1.2/2Route
oral
Category
neuroprotective
Evidence Overview
Strength of evidence across clinical, expert, and experimental lanes.
How Methylene Blue is dosed in practice
Usually taken by mouth. Typical range: 0.5–2 mg/kg (low dose for cognitive; higher for medical). Half-life: 5–6.5 hours. Each card gives the dose, frequency and duration from one evidence lane: Clinical (human trials), Expert (practitioner protocols) or Experimental (early or animal data). These ranges describe what has been studied or used; they are not a prescription.
Work out the units to draw with the reconstitution calculator, how long a vial lasts with the vial duration calculator, and how levels fall between doses with the half-life calculator.
Approved only as IV treatment for methemoglobinemia. Oral human data are small: a single-dose imaging study (2016) that reported a 7% gain in memory retrieval and a crossover trial in bipolar depression (2017). No trial has used cycled daily oral dosing for cognition.
- Drug label (ProvayBlue)
- Single-dose imaging study in healthy adults (2016)
- Crossover trial in bipolar disorder (2017)
the expert describes it as bypassing 'ETC traffic jams' to crank up ATP production. Must be pharmaceutical grade (USP). Stains everything blue — tongue, urine. Cycling is mandatory to prevent tolerance. Synergizes with MOTS-c and BPC-157 in the Trilogy for Life.
- Leading Clinical Expert — Trilogy for Life signature stack component
- Biohacking community widely adopted for cognitive enhancement
- Nootropic practitioners recommend 0.5–1 mg oral doses
Users report blue-tinted urine and stained tongue as expected side effects. Some report vivid dreams. The hormetic curve means more is NOT better — overshooting the dose reverses benefits. Community consensus: start at 0.5 mg and titrate slowly.
- Community reports of enhanced focus, mental clarity, and energy at micro-doses
- Some users combine with NAD+ precursors and peptides for 'mitochondrial stacking'
- Long-term low-dose safety data still limited for cognitive use
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Safety & Contraindications
- G6PD deficiency (risk of hemolytic anemia)
- Concurrent use of serotonergic drugs (SSRIs, SNRIs) — risk of serotonin syndrome
- Pregnancy or breastfeeding
- Renal impairment (dose adjustment required)
Methylene Blue: common questions
What is Methylene Blue?
A century-old pharmaceutical dye repurposed as a mitochondrial optimizer. At low doses (0.5–1 mg), methylene blue acts as an alternative electron carrier in the mitochondrial electron transport chain, bypassing damaged Complex I and III to donate electrons directly to cytochrome c. This can increase oxygen consumption up to 70% and ATP production by ~30%. Follows a hormetic (inverted U-shaped) dose-response curve — low doses enhance function while high doses are harmful. Practitioners describe it as a 'secret weapon' for mitochondrial support.
How is Methylene Blue dosed?
Methylene Blue is usually taken by mouth. Typical range in DoseCraft's library: 0.5–2 mg/kg (low dose for cognitive; higher for medical). Clinical (human trials), intravenously (IV): 1 mg/kg IV (label, methemoglobinemia); oral studies: a single 280 mg dose in healthy adults; 195 mg/day in bipolar disorder; IV single dose with one optional repeat (label); oral single dose or daily (studies); Acute (label); single dose to a 6-month crossover (studies). Expert (practitioner protocols): 0.5–1 mg oral, cycled (must not take continuously); Once daily during on-cycle; 4-week on / 2-week off cycles. Experimental (early or animal data): 0.5–1 mg oral, some users go up to 2 mg; Once daily; Varies — most cycle 4 weeks on / 2 weeks off. These ranges describe what has been studied or used; they are not a prescription.
Is Methylene Blue FDA-approved?
Methylene Blue is FDA-approved, but for a specific indication; most uses discussed for it are off-label.
What is the half-life of Methylene Blue?
DoseCraft's library lists a half-life of 5–6.5 hours. Half-life sets how often a compound is dosed and how long it takes to clear: about five half-lives.
Who should not use Methylene Blue?
Listed contraindications: G6PD deficiency (risk of hemolytic anemia); Concurrent use of serotonergic drugs (SSRIs, SNRIs) — risk of serotonin syndrome; Pregnancy or breastfeeding; Renal impairment (dose adjustment required).
Information is for educational purposes only. Always consult a licensed healthcare provider before starting any peptide regimen.
Page updated . How we grade evidence: methodology.