Compound atlas
Cognitive

Semax

Peptide
Half-life
1h
approx. mean t½
Dose range
300–600 mcg
typical, not prescriptive
Category
Cognitive
primary use-case
Single-dose decay
t½ = 1h · first-order model
~4h
to clear
1× t½
50%
remaining
2× t½
25%
remaining
~4× t½
6%
remaining
0%25%50%75%100%0m1.2h2.4h3.6h4.8h6h

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 ACTH(4-10) analog developed in Russia as a nootropic for focus and neuroprotection.

Mechanism of action

Raises BDNF and NGF, modulates dopamine/serotonin systems, and activates melanocortin receptors.

Typical protocol

300–600 mcg intranasal, 1–3× daily, in 2–4 week cycles.

Storage

Refrigerated; nasal solution stable ~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.