Semax
Focus and mental stamina
Learn moreCommonly chosen for: Anxiety and calm focus

Selank is built from a natural immune peptide and works on some of the same calming systems that anti-anxiety medications target, but by a different route. Users report reduced anxiety without the drowsiness, foggy thinking or dependence those drugs can bring. It's often paired with Semax — one calms, one sharpens. Approved in Russia, not in the US.
Selank is built from tuftsin, a natural immune peptide, modified to last longer in the body.
It influences some of the same calming systems that anti-anxiety medications target, but by a different route, and also affects serotonin and BDNF signalling.
Users report a calmer baseline without the drowsiness, foggy thinking or dependence those medications can bring. It is approved in Russia, not in the US.
Nasal irritation with the nasal form, mild tiredness and headache are the usual reports. Human data is limited and long-term safety is not established.
Not appropriate in pregnancy or breastfeeding. Do not stop or replace a prescribed psychiatric medication with this; discuss any such medication with your provider first.
No scheduled video visit required — reviewed and prescribed by a licensed provider. Add a consult if you have a chronic condition or take other medication.
This page is educational and is not medical advice. Nothing here is intended to diagnose, treat, cure or prevent any disease. Where you see the FDA-Approved Ingredient mark, the active ingredient is FDA-approved in at least one prescription medication. Products without it are prescribed based on your provider's clinical judgment and current research. Compounded preparations are not FDA-approved products in either case.
Focus and mental stamina
Learn moreDeep sleep
Learn moreMemory and brain aging
Learn moreLongevity, sleep cycle
Learn moreWhat peptides are, how they work and how to think about goals.
ReadMixing, storage temperatures and shelf life — practical, no dosing.
ReadSubcutaneous technique, site rotation and sharps disposal.
Read503A and 503B pharmacies, third-party testing and what we can't promise.
ReadStart through the secure consultation workflow when the intake link becomes active.
Treatment is only available if determined medically appropriate by a licensed provider.