Side-by-Side Comparison · 2026

Adamax vs N-Acetyl Selank Amidate

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

Adamax
Cognitive & Neurological

Adamax is a branded formulation of N-Acetyl Semax Amidate, the most potent and longest-acting analog of the nootropic peptide Semax. The N-acetyl modification at the N-terminus and amide modification at the C-terminus together extend its half-life and increase BDNF-stimulating po...

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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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Key Parameters
Parameter Adamax N-Acetyl Selank Amidate
Category Cognitive & Neurological Cognitive & Neurological
Research Research Use Research Use
Half-Life ~8–12 hours (extended vs. standard Semax) ~6–8 hours (estimated; extended vs. standard Selank)
Typical Dose 100–300 µg 100–300 µg
Frequency Once or twice daily 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 Adamax and N-Acetyl Selank Amidate?
Adamax: Adamax is a branded formulation of N-Acetyl Semax Amidate, the most potent and longest-acting analog of the nootropic peptide Semax. The N-acetyl modification at the N-terminus and amide modification ... 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...
Which has a longer half-life, Adamax or N-Acetyl Selank Amidate?
Adamax half-life: ~8–12 hours (extended vs. standard Semax). N-Acetyl Selank Amidate half-life: ~6–8 hours (estimated; extended vs. standard Selank).
Can you stack Adamax and N-Acetyl Selank Amidate?
Adamax and N-Acetyl Selank Amidate 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.