--- title: "Epithalon vs NAC: Side-by-Side Comparison (2026)" url: https://www.bodyhackguide.co/compare/epithalon-vs-nac description: "Compare Epithalon vs NAC side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices. NAC from $49.99." 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) # Epithalon vs NAC Side-by-side comparison of Epithalon and NAC: mechanism, half-life, dose range, safety profile, and vendor pricing. Epithalon from $34.99 NAC from $49.99 ## Price snapshot ### Epithalon Current low $34.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### NAC Current low $49.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## Epithalon Epithalon (also spelled Epitalon, sequence Ala-Glu-Asp-Gly / AEDG) is a synthetic tetrapeptide designed by Prof. Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology in the 1980s as a… **Lowest listed price:** $34.99 across 4 listings Full Epithalon profile (https://www.bodyhackguide.co/compound/epithalon) ## NAC N-acetylcysteine (NAC) is the acetylated form of the amino acid L-cysteine — a small thiol-containing molecule that serves as a rate-limiting precursor for glutathione (GSH) synthesis and, independently, as a direct… **Lowest listed price:** $49.99 across 1 listing Full NAC profile (https://www.bodyhackguide.co/compound/nac) ## Side-by-side comparison | Attribute | Epithalon | NAC | | --- | --- | --- | | Category | Longevity & Cellular Health | Antioxidants | | Research Stage | Preclinical (Western standards); Used clinically in Russian gerontological medicine | Preclinical | | Mechanism of Action | Epithalon (AEDG; Ala-Glu-Asp-Gly) is a synthetic tetrapeptide modeled on the pineal polypeptide preparation epithalamin. Its proposed mechanism spans several parallel pathways. The human-relevant evidence is strongest for melatonin/circadian effects; the… | NAC's mechanism of action operates through at least four distinct but overlapping pathways, and understanding which pathway dominates in a given clinical context is essential for predicting whether supplementation will actually help. The four pathways are (1)… | | Half-Life | Not well characterized in humans. As a small tetrapeptide, AEDG is expected to have a very short plasma half-life (on the order of minutes), while downstream gene-expression and circadian effects are thought to persist considerably longer. Any specific half-life figure should be treated as an unvalidated estimate. | — | | Typical Dose Range | 5000-10000 mcg (5-10 mg) subcutaneous daily for 10-20 day cycles; typically repeated 1-2 times per year in anti-aging protocols | — | | Dosing Frequency | Once daily for 10–20 day cycles | — | | Administration | Subcutaneous | — | | Side Effects | Expected / benign - Mild injection-site reaction — redness, slight tenderness, occasional small bruise. Resolves within 24-48 hours. - Enhanced, more vivid dreams in the first week of a cycle — consistent with melatonin rise. - Deeper sleep onset and feeling… | NAC has one of the most favorable safety profiles in medicine when dosed appropriately and used for appropriate indications. Side effects are almost entirely gastrointestinal at oral therapeutic doses and anaphylactoid at high IV infusion rates; true allergic… | | Molecular Weight | 390.3 Da | — | | Common Vial Sizes | 10mg, 50mg | — | ## Price History 4 data points - Half Nattys - Disguised Alpha - LB ## Price tracking Tracking NAC prices since September 5, 2026. Trend chart unlocks once we have price snapshots from more than one day. ### Epithalon: potential benefits - Telomerase activation and telomere elongation (human cell culture) - Normalization of circadian melatonin rhythm (human data from epithalamin, the parent pineal preparation) - Improved sleep consolidation and circadian regularity (subjective) - Modest life-span effects in rodents (mainly maximum / late-survivor lifespan; no change in mean lifespan) - Reduced incidence of specific tumors (e.g. ~6-fold fewer leukemias in SHR mice); no change in total tumor incidence - Reduced chromosomal aberrations in aged rodent tissue - Site-specific DNA / chromatin binding (proposed epigenetic modulation) - Association with lower mortality in an elderly cardiovascular cohort (epithalamin RCT, Korkushko 2011) ### NAC: potential benefits - No structured benefit list published. ## Frequently asked ### What's the difference between Epithalon and NAC? Epithalon is a longevity & cellular health that epithalon (aedg; ala-glu-asp-gly) is a synthetic tetrapeptide modeled on the pineal polypeptide preparation epithalamin. its proposed mechanism spans several parallel pathways. the…. NAC is a antioxidants that nac's mechanism of action operates through at least four distinct but overlapping pathways, and understanding which pathway dominates in a given clinical context is essential for…. The two differ in mechanism, half-life (Not well characterized in humans. As a small tetrapeptide, AEDG is expected to have a very short plasma half-life (on the order of minutes), while downstream gene-expression and circadian effects are thought to persist considerably longer. Any specific half-life figure should be treated as an unvalidated estimate. vs not reported), and typical dose range. ### Which has the longer half-life, Epithalon or NAC? Epithalon has a half-life of Not well characterized in humans. As a small tetrapeptide, AEDG is expected to have a very short plasma half-life (on the order of minutes), while downstream gene-expression and circadian effects are thought to persist considerably longer. Any specific half-life figure should be treated as an unvalidated estimate.. NAC has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Which is cheaper, Epithalon or NAC? Lowest listed price on BodyHackGuide: Epithalon from $34.99, NAC from $49.99. Prices are pulled from the vendor listings tracked on BHG and change frequently. See the compare tables on each compound page for the current set of offers. ### Can you stack Epithalon and NAC? Stacking depends on mechanism overlap, safety profile, and goals. Epithalon and NAC 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. Epithalon prices: https://www.bodyhackguide.co/compound/epithalon?tab=prices NAC prices: https://www.bodyhackguide.co/compound/nac?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy Epithalon or NAC 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 Pinealon vs Epithalon: https://www.bodyhackguide.co/compare/pinealon-vs-epithalon NAC vs Glutathione: https://www.bodyhackguide.co/compare/nac-vs-glutathione **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. 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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