Compound atlas
Cognitive

Selank

Peptide
Half-life
4h
approx. mean t½
Dose range
250–750 mcg
typical, not prescriptive
Category
Cognitive
primary use-case
Single-dose decay
t½ = 4h · first-order model
~16h
to clear
1× t½
50%
remaining
2× t½
25%
remaining
~4× t½
6%
remaining
0%25%50%75%100%0m4h8h12h16h20h

How a single dose clears, assuming first-order elimination. The half-life is the biggest driver of how often you dose — start a cycle to see your own cumulative concentration curve.

Overview

A synthetic analog of tuftsin with anxiolytic and nootropic effects, without sedation or dependence.

Mechanism of action

Alters enkephalin metabolism and modulates GABAergic and serotonergic systems; upregulates BDNF.

Typical protocol

250–750 mcg intranasal, 2–3× daily, 2–4 week cycles.

Storage

Refrigerated; nasal solution ~30 days.

Disclaimer

This page summarizes publicly available information. None of it constitutes medical advice, prescription, or recommendation to acquire, possess, or use any compound. Many peptides described are research chemicals not approved for human use in the EU. Consult a licensed physician.