Inositol vs N-Acetyl-Selank
Side-by-side comparison of Inositol and N-Acetyl-Selank: mechanism, half-life, dose range, safety profile, and vendor pricing.
Price snapshot
Inositol
N-Acetyl-Selank
Inositol
Inositol is a naturally-occurring cyclic sugar alcohol (cyclohexanehexol) that functions as a critical structural component of cell membranes and a second-messenger precursor in intracellular signaling. Of the nine…
No vendor price on file.
Full Inositol profileN-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 profileSide-by-side comparison
| Attribute | Inositol | N-Acetyl-Selank |
|---|---|---|
| Category | Nootropic | Cognitive |
| Research Stage | Preclinical | Preclinical (the N-acetyl analog has no dedicated studies); parent Selank has limited clinical use in Russia |
| Mechanism of Action | Inositol functions at the intersection of membrane biology, second-messenger signaling, and cellular metabolism, with distinct biochemical roles for the two clinically relevant stereoisomers (myo-inositol and D-chiro-inositol) that together explain its… | 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 | Inositol has one of the most favorable side effect profiles of any clinically effective compound, reflecting its endogenous origin, lack of metabolism, and graduated physiological effects. However, some considerations warrant attention particularly at high… | 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
Inositol: 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 Inositol and N-Acetyl-Selank?
Inositol is a nootropic that inositol functions at the intersection of membrane biology, second-messenger signaling, and cellular metabolism, with distinct biochemical roles for the two clinically relevant…. 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, Inositol or N-Acetyl-Selank?
Inositol 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 Inositol and N-Acetyl-Selank?
Stacking depends on mechanism overlap, safety profile, and goals. Inositol 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.
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Related comparisons
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 and affiliate disclosure.