Selank + Semax blend vs Semax

Name: Selank + Semax blend vs Semax
Published: 2026-10-24

Updated Oct 24, 20267 sources

Key differences

1Separate Semax can be moved up or down on its own; a 1:1 blend raises both peptides together.
2Some users only tolerate Semax with Selank alongside, which is the case for the blend.

Facts from each record, in the same words as their own pages.

Selank + Semax blend and Semax side by side
	Selank + Semax blend	Semax
Category	Cognitive	Cognitive
Evidence	No human trials	Limited human data
FDA status	Not FDA approvedRegulatory	Not FDA approvedRegulatory
WADA	Not confirmed	Not confirmed
Half-life	Selank: in plasma within 30 seconds of a nasal dose, and levels fall over 5 to 5.5 minutes, per the Russian label.Regulatory Semax: no human value. In rats it reaches the brain 2 minutes after a nasal dose and breaks down fast.Clinical study	No human data; FDA found no human pharmacokinetic studies. In rats, brain levels peak 2 minutes after a nasal dose and the peptide breaks down fast.Clinical study
Routes	Subcutaneous injection, Nasal	Nasal, Subcutaneous injection
Forms	Vial (powder), Nasal spray	Nasal spray, Vial (powder)
Reported doses	200 to 1,200 mcg (subcutaneous injection) 400 to 800 mcg (subcutaneous injection) 100 to 200 mcg (nasal)	150 to 6,000 mcg (nasal) 12 to 18 mg (nasal) 15 to 50 mcg/kg (nasal)
Most cited frequency	1 to 2 times a day, at the same times each day	Once daily
Vial sizes	10 mg, 20 mg, 40 mgCompetitor guide	5 mg, 10 mg, 20 mg, 30 mgCompetitor guide
Mixed vial keeps	Fridge at 2 to 8 C, never frozen, kept dark because Semax is light-sensitive.Competitor guide	Fridge at 2 to 8 C.Competitor guide
Protocols on file	7	30

Doses shown are what sources report, labelled by origin. Not medical advice.

7 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Russian nootropic stack: Semax + Selankpeptidedosingprotocols.com · checked Oct 24, 2026