Side-by-Side Comparison · 2026

N-Acetyl Selank Amidate vs Neuroxelin

N-Acetyl Selank Amidate vs Neuroxelin — 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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Neuroxelin
Cognitive & Neurological

Neuroxelin is a vendor nootropic peptide blend containing PE-22-28 (10 mg), Pinealon (10 mg), N-Acetyl Semax (20 mg), and N-Acetyl Selank (8 mg), formulated for intranasal administration. It combines four cognitively-active peptides targeting different aspects of brain performanc...

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Key Parameters
Parameter N-Acetyl Selank Amidate Neuroxelin
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 Neuroxelin?
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... Neuroxelin: Neuroxelin is a vendor nootropic peptide blend containing PE-22-28 (10 mg), Pinealon (10 mg), N-Acetyl Semax (20 mg), and N-Acetyl Selank (8 mg), formulated for intranasal administration. It combines ...
Which has a longer half-life, N-Acetyl Selank Amidate or Neuroxelin?
N-Acetyl Selank Amidate half-life: ~6–8 hours (estimated; extended vs. standard Selank). Neuroxelin half-life: unknown.
Can you stack N-Acetyl Selank Amidate and Neuroxelin?
N-Acetyl Selank Amidate and Neuroxelin 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.