--- title: "Methylene Blue vs N-Acetyl-Semax: Compared (2026)" url: https://www.bodyhackguide.co/compare/methylene-blue-vs-n-acetyl-semax description: "Compare Methylene Blue vs N-Acetyl-Semax side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # Methylene Blue vs N-Acetyl-Semax Side-by-side comparison of Methylene Blue and N-Acetyl-Semax: mechanism, half-life, dose range, safety profile, and vendor pricing. Methylene Blue from $19.99 N-Acetyl-Semax: no price on file ## Price snapshot ### Methylene Blue Current low $19.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### N-Acetyl-Semax Current low — 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## Methylene Blue Methylene blue (methylthioninium chloride) is a phenothiazine dye with a 150-year pharmacology record. It was the first fully synthetic drug ever used in medicine (Ehrlich, 1891 for malaria) and remains on the WHO Model… **Lowest listed price:** $19.99 across 3 listings Full Methylene Blue profile (https://www.bodyhackguide.co/compound/methylene-blue) ## N-Acetyl-Semax This is a duplicate/alias entry. The full, maintained guide for this compound lives at NA-Semax (/compound/na-semax). See that page for mechanism, dosing, evidence, and safety. No vendor price on file. Full N-Acetyl-Semax profile (https://www.bodyhackguide.co/compound/n-acetyl-semax) ## Side-by-side comparison | Attribute | Methylene Blue | N-Acetyl-Semax | | --- | --- | --- | | Category | Nootropics | Cognitive | | Research Stage | Preclinical | Duplicate entry - see NA-Semax | | Mechanism of Action | Methylene blue (MB) has a multi-target redox mechanism that explains why it appears in such disparate indications as malaria, methemoglobinemia, septic shock, vasoplegia, Alzheimer's (TRx0237), and cognitive enhancement: 1. Alternative mitochondrial electron… | See the full guide This page is a duplicate of NA-Semax, which is the canonical, maintained entry. To avoid conflicting or outdated information, all detail - mechanism of action, protocols, dosing, side effects, and verified citations - is kept on that single… | | Half-Life | — | — | | Typical Dose Range | 0.5 mg - 4 mg/kg daily (oral) | — | | Dosing Frequency | — | — | | Administration | — | — | | Side Effects | Expected / benign - Blue-green urine and stool — universal, not a problem, clears within 24-48 hours of last dose. - Blue discoloration of sclera and skin at sustained higher doses; reversible. - Metallic taste and mild mucosal tingling at oral doses 30 mg. -… | — | | Molecular Weight | 319.85 g/mol | — | | Common Vial Sizes | — | — | ## Price History 3 data points - Half Nattys - Ion Peptide - Disguised Alpha ### Methylene Blue: potential benefits - Mitochondrial electron transport bypass (Complex I/III) - Cytochrome c oxidase activation (+30-70%) - Memory consolidation and retrieval - Sustained attention and processing speed - Antioxidant recycling of ascorbate and glutathione - Tau aggregation inhibition (Alzheimer's-relevant) - FDA-indicated treatment for methemoglobinemia - Adjunct for vasoplegic shock (off-label) ### N-Acetyl-Semax: potential benefits - See the full guide at NA-Semax (/compound/na-semax) for benefits and evidence. ## Frequently asked ### What's the difference between Methylene Blue and N-Acetyl-Semax? Methylene Blue is a nootropics that methylene blue (mb) has a multi-target redox mechanism that explains why it appears in such disparate indications as malaria, methemoglobinemia, septic shock, vasoplegia,…. N-Acetyl-Semax is a cognitive that see the full guide this page is a duplicate of na-semax, which is the canonical, maintained entry. to avoid conflicting or outdated information, all detail - mechanism of action,…. The two differ in mechanism, half-life (not reported vs not reported), and typical dose range. ### Which has the longer half-life, Methylene Blue or N-Acetyl-Semax? Methylene Blue has a half-life of not reported. N-Acetyl-Semax has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Can you stack Methylene Blue and N-Acetyl-Semax? Stacking depends on mechanism overlap, safety profile, and goals. Methylene Blue and N-Acetyl-Semax should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds. ## See current vendor prices Listings from the vendors we track. Prices change often, so check the vendor before you buy. Methylene Blue prices: https://www.bodyhackguide.co/compound/methylene-blue?tab=prices N-Acetyl-Semax prices: https://www.bodyhackguide.co/compound/n-acetyl-semax?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy Methylene Blue or N-Acetyl-Semax Check the vendor trust score. Every supplier we track is rated 0-100 on COA verification, payment transparency, shipping, reviews, and listings: one published, reproducible methodology, applied to every vendor. View Vendor Scorecard (https://www.bodyhackguide.co/vendors/scorecard) ## Related comparisons N Acetyl Selank vs N Acetyl Semax: https://www.bodyhackguide.co/compare/n-acetyl-selank-vs-n-acetyl-semax Methylene Blue vs MOTS C: https://www.bodyhackguide.co/compare/methylene-blue-vs-mots-c **Research use only.** BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. We earn an affiliate commission on some outbound clicks, and every vendor is ranked on the same public, reproducible methodology. See editorial standards (https://www.bodyhackguide.co/editorial-standards) and affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). 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