Peptide Encyclopedia / N-Acetyl Semax Amidate
EncyclopediaN-Acetyl Semax Amidate is a modified analog of Semax, a synthetic heptapeptide based on an ACTH fragment, with acetylation and amidation for stability and proposed neuroprotective and nootropic effects. The FDA has not approved it, and independent human data on the analog stay minimal. Educational only, not medical advice.
| Category | Cognitive |
| Regulatory status | Not FDA-approved; research chemical / gray-market in the US. |
A chemically modified analog of Semax, itself a synthetic heptapeptide based on a fragment of ACTH(4-10). N-terminal acetylation and C-terminal amidation are intended to increase metabolic stability. Proposed effects include upregulation of BDNF/NGF and modulation of monoaminergic systems in the brain; the original Semax is studied as a neuroprotective/nootropic agent.
uncertain / limited human pharmacokinetic data; native Semax is very short-acting (minutes), and the acetylated/amidated modification is claimed to extend duration, but no peer-reviewed human PK data confirm the longer half-life figures circulated online.
Not FDA-approved; research chemical / gray-market in the US. The parent compound Semax is a registered/approved drug in Russia (and used in some CIS countries) for stroke and cognitive indications, but the N-acetyl amidate analog itself is not an approved drug anywhere and is sold as a research chemical.
Human safety data are minimal for the modified analog. Reported (mostly anecdotal/animal) effects are generally mild; potential concerns include effects on mood, blood pressure, and unknown long-term consequences. Product purity and identity from gray-market sources are unverified.
Parent Semax has a body of Russian clinical and preclinical research; the specific N-acetyl amidate analog has minimal independent or Western human data and is largely characterized by vendor claims and animal/in-vitro work rather than rigorous trials.
PepWise is an informational and educational tracking tool, not medical advice and not a medical device. N-Acetyl Semax Amidate may be experimental, restricted, or prescription-only; many research peptides are not FDA-approved. Consult a licensed healthcare provider before starting, changing, or stopping any protocol. Operated by STC Consulting, Inc.
