Side-by-Side Comparison · 2026

N-Acetyl Selank Amidate vs Synapsin

N-Acetyl Selank Amidate vs Synapsin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

N-Acetyl Selank Amidate
Cognitive & Neurological

N-Acetyl Selank Amidate is a doubly-modified form of Selank (a synthetic heptapeptide based on tuftsin) with N-acetylation at the N-terminus and amidation at the C-terminus. These modifications extend enzymatic stability and CNS bioavailability, making it the highest-potency form...

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Synapsin
Cognitive & Neurological

Synapsin is a proprietary intranasal peptide blend combining GHK-Cu (copper tripeptide for neuroregenerative and anti-inflammatory effects) and Dihexa (a potent HGF/c-Met agonist for synaptogenesis and memory). The combination targets synaptic density and cognitive performance fr...

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Key Parameters
Parameter N-Acetyl Selank Amidate Synapsin
Category Cognitive & Neurological Cognitive & Neurological
Research Research Use Vendor Blend
Half-Life ~6–8 hours (estimated; extended vs. standard Selank) -
Typical Dose 100–300 µg -
Frequency Once or twice daily -
Route Intranasal Intranasal
FDA Status Not Approved Not Approved

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Frequently Asked Questions
What is the difference between N-Acetyl Selank Amidate and Synapsin?
N-Acetyl Selank Amidate: N-Acetyl Selank Amidate is a doubly-modified form of Selank (a synthetic heptapeptide based on tuftsin) with N-acetylation at the N-terminus and amidation at the C-terminus. These modifications extend... Synapsin: Synapsin is a proprietary intranasal peptide blend combining GHK-Cu (copper tripeptide for neuroregenerative and anti-inflammatory effects) and Dihexa (a potent HGF/c-Met agonist for synaptogenesis an...
Which has a longer half-life, N-Acetyl Selank Amidate or Synapsin?
N-Acetyl Selank Amidate half-life: ~6–8 hours (estimated; extended vs. standard Selank). Synapsin half-life: unknown.
Can you stack N-Acetyl Selank Amidate and Synapsin?
N-Acetyl Selank Amidate and Synapsin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.