--- title: "Eleuthero vs N-Acetyl-Selank: Side-by-Side Comparison (2026)" url: https://www.bodyhackguide.co/compare/eleuthero-vs-n-acetyl-selank description: "Compare Eleuthero vs N-Acetyl-Selank 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) # Eleuthero vs N-Acetyl-Selank Side-by-side comparison of Eleuthero and N-Acetyl-Selank: mechanism, half-life, dose range, safety profile, and vendor pricing. Eleuthero: no price on file N-Acetyl-Selank from $79.99 ## Price snapshot ### Eleuthero Current low — 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### N-Acetyl-Selank Current low $79.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## Eleuthero Eleuthero (scientific name Eleutherococcus senticosus, formerly classified as Acanthopanax senticosus; called ci wu jia in Chinese, siberian ginseng in Western herbalism — though this common name is problematic and… No vendor price on file. Full Eleuthero profile (https://www.bodyhackguide.co/compound/eleuthero) ## N-Acetyl-Selank N-Acetyl-Selank is the N-terminally acetylated analog of Selank, a tuftsin-derived heptapeptide used intranasally for its reported anxiolytic and nootropic effects. The acetyl group is claimed to improve stability and… **Lowest listed price:** $79.99 across 2 listings Full N-Acetyl-Selank profile (https://www.bodyhackguide.co/compound/n-acetyl-selank) ## Side-by-side comparison | Attribute | Eleuthero | N-Acetyl-Selank | | --- | --- | --- | | Category | Adaptogen | Cognitive | | Research Stage | Preclinical | Preclinical (the N-acetyl analog has no dedicated studies); parent Selank has limited clinical use in Russia | | Mechanism of Action | Eleuthero (Eleutherococcus senticosus) operates through multiple adaptogenic mechanisms, most of which fall under the broad concept of stress-system normalization and cellular resilience enhancement. Unlike simple stimulants that acutely upregulate one… | N-Acetyl-Selank is the N-terminally acetylated analog of Selank, a synthetic heptapeptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) derived from the endogenous immunopeptide tuftsin (Thr-Lys-Pro-Arg) with a C-terminal Pro-Gly-Pro tail added to slow enzymatic breakdown.… | | Half-Life | — | Not established for the N-acetyl analog. Parent Selank has a very short plasma half-life (on the order of minutes, as expected for a small peptide) but produces behavioral effects lasting hours, attributed to active fragments and downstream enkephalin/GABA modulation. N-acetylation is claimed to slow N-terminal degradation and extend duration, but this is unquantified in published literature. | | Typical Dose Range | — | 100-900 mcg | | Dosing Frequency | — | Once or twice daily (intranasal); some advanced users split into 2-3 doses | | Administration | — | — | | Side Effects | Eleuthero has one of the best safety profiles among classical adaptogens, with thousands of human subjects studied across Russian and Western research and very low incidence of serious adverse effects. Most users tolerate standard doses (300-1200mg extract… | In short Russian clinical trials, parent Selank was generally well tolerated with no serious adverse effects reported [PMID:18454096]. Reported or plausible effects (largely extrapolated to the analog): mild nasal irritation or congestion from the spray,… | | Molecular Weight | — | ~793.9 g/mol (theoretical: Selank ~751.9 g/mol + N-terminal acetyl, ~+42). Approximate molecular formula C35H59N11O10. | | Common Vial Sizes | — | — | ## Price tracking Tracking N-Acetyl-Selank prices since September 5, 2026. Trend chart unlocks once we have price snapshots from more than one day. ### Eleuthero: potential benefits - No structured benefit list published. ### N-Acetyl-Selank: potential benefits - Anxiolytic (calming) effects - the most-studied action of parent Selank, including a Russian clinical trial in generalized anxiety disorder [PMID:18454096] - Nootropic / cognitive support - reported attention and memory benefits in rodent models, linked to BDNF changes [PMID:31625062] - Stress resilience reported without the sedation, tolerance, or dependence typically seen with benzodiazepines (preclinical framing) [PMID:30255741] - Possible support during withdrawal states (alcohol, opioid) in animal models [PMID:24913576][PMID:36322304] - Claimed longer duration vs. plain Selank from N-terminal acetylation - a community/vendor claim not verified in published data ## Frequently asked ### What's the difference between Eleuthero and N-Acetyl-Selank? Eleuthero is a adaptogen that eleuthero (eleutherococcus senticosus) operates through multiple adaptogenic mechanisms, most of which fall under the broad concept of stress-system normalization and cellular…. N-Acetyl-Selank is a cognitive that n-acetyl-selank is the n-terminally acetylated analog of selank, a synthetic heptapeptide (thr-lys-pro-arg-pro-gly-pro) derived from the endogenous immunopeptide tuftsin…. The two differ in mechanism, half-life (not reported vs Not established for the N-acetyl analog. Parent Selank has a very short plasma half-life (on the order of minutes, as expected for a small peptide) but produces behavioral effects lasting hours, attributed to active fragments and downstream enkephalin/GABA modulation. N-acetylation is claimed to slow N-terminal degradation and extend duration, but this is unquantified in published literature.), and typical dose range. ### Which has the longer half-life, Eleuthero or N-Acetyl-Selank? Eleuthero has a half-life of not reported. N-Acetyl-Selank has a half-life of Not established for the N-acetyl analog. Parent Selank has a very short plasma half-life (on the order of minutes, as expected for a small peptide) but produces behavioral effects lasting hours, attributed to active fragments and downstream enkephalin/GABA modulation. N-acetylation is claimed to slow N-terminal degradation and extend duration, but this is unquantified in published literature.. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Can you stack Eleuthero and N-Acetyl-Selank? Stacking depends on mechanism overlap, safety profile, and goals. Eleuthero and N-Acetyl-Selank 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. Eleuthero prices: https://www.bodyhackguide.co/compound/eleuthero?tab=prices N-Acetyl-Selank prices: https://www.bodyhackguide.co/compound/n-acetyl-selank?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy Eleuthero or N-Acetyl-Selank 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 **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). BodyHackGuide (https://www.bodyhackguide.co/) Your biohacking research hub: compound pricing, brain health protocols, dosing tools, and vendor reviews. support@bodyhackguide.co Join our Discord: https://discord.gg/Mhq5UdRYBA r/BodyHackGuide on Reddit: https://reddit.com/r/BodyHackGuide **Affiliate Disclosure:** We rank every vendor on the same public, reproducible methodology (https://www.bodyhackguide.co/vendors/methodology). 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Parent Selank has a very short plasma half-life (on the order of minutes, as expected for a small peptide) but produces behavioral effects lasting hours, attributed to active fragments and downstream enkephalin/GABA modulation. N-acetylation is claimed to slow N-terminal degradation and extend duration, but this is unquantified in published literature.. Longer half-lives generally mean less frequent dosing but slower on/off kinetics." } }, { "@type": "Question", "name": "Can you stack Eleuthero and N-Acetyl-Selank?", "acceptedAnswer": { "@type": "Answer", "text": "Stacking depends on mechanism overlap, safety profile, and goals. Eleuthero and N-Acetyl-Selank 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." } } ] } ] ```