Beyond recovery and metabolic peptides, there's a whole category studied for the brain. Semax and Selank are the two most-referenced nootropic research peptides — here's how they compare.
- Semax is a synthetic peptide studied in cognition and neuroprotection models.
- Selank is studied more in anxiety and immune-modulation research.
- Both are available at HPLC ≥99% purity with a COA and COD across India.
Two different starting points
Semax is a synthetic peptide derived from a fragment of the ACTH hormone (the 4–10 region), modified for stability. Selank is a synthetic analogue of tuftsin, a naturally occurring immune-modulating peptide. Despite often being grouped together as “nootropic peptides,” they come from completely different biological families.
What each is studied for
Semax research clusters around cognition, attention and neuroprotection models, with a recurring interest in BDNF (a key neurotrophic factor). Selank research leans toward anxiety models and immune modulation, reflecting its tuftsin origin. That difference in focus is the main reason a researcher would choose one over the other.
Forms and handling
Both ship as lyophilised powder for reconstitution with bacteriostatic water. Some researchers reference intranasal-format studies for this class; whatever the model, storage is the same — refrigerated and protected from light once reconstituted. See the reconstitution guide.
Sourcing in India
Both Semax and Selank are HPLC-tested to ≥99% purity with a COA, and ship with COD and discreet delivery across India.
Semax & Selank
Two nootropic research peptides — HPLC ≥99% purity, COA with every batch, COD across India.
Frequently asked questions
What is the difference between Semax and Selank?
Semax is an ACTH(4-10) analogue studied in cognition and neuroprotection models; Selank is a tuftsin analogue studied more in anxiety and immune-modulation research. This is not usage advice.
Are Semax and Selank nootropics?
They are commonly grouped as “nootropic research peptides,” but they are supplied strictly as laboratory reference materials, not supplements or medicines.
Do they come with a COA?
Yes — both are HPLC-tested to ≥99% purity with a Certificate of Analysis.
Is COD available for Semax and Selank?
Yes, Cash on Delivery is available across India at checkout.
⚠️ Research use only. All products referenced are supplied strictly as laboratory research chemicals / reference materials — not for human or veterinary use, not drugs, and not for diagnostic or therapeutic purposes. Nothing here is medical advice.