For laboratory and research use only. Not for human consumption.Research use only. Not for human consumption.
Peptide Guides

Semax vs. Selank: What Is the Difference?

Semax and Selank are constantly mentioned together. Here is how the two research neuropeptides actually differ.

5 min read Reviewed for accuracy Research Use Only
The short answer

Semax is derived from a fragment of ACTH; Selank is derived from a fragment of tuftsin. Both are research neuropeptides, often studied together, differing in their origin and research focus. Research use only.

Side by side

SemaxSelank
Derived fromACTH fragmentTuftsin fragment
ClassNeuropeptideNeuropeptide
Research focusMelanocortin and neurotrophin signalingNeuropeptide signaling
StatusResearch use onlyResearch use only
Two still pools of dark water side by side, one carrying a sharp bright ripple and one perfectly flat
Semax and Selank are often studied together as research neuropeptides. Browse the catalog →

Why they are studied together

Because both are short, stabilized neuropeptides of Russian origin studied in related areas, they are frequently paired in research and sometimes offered together as a blend. As research compounds, both are supplied for research use only.

What to look for

Whichever you study, a research-grade compound should ship with a batch-specific certificate of analysis documenting purity and identity.

Key takeaways

  • Semax is ACTH-derived; Selank is tuftsin-derived.
  • Both are research neuropeptides.
  • They are frequently studied together and sometimes blended.
  • Both are supplied for research use only.

A note on research use

The peptides supplied by Axis Peptide Labs are reference compounds for laboratory and research use only. They are intended for qualified researchers working in academic, institutional, and analytical settings. They are not drugs, foods, cosmetics, or medical products, and they are not intended for human or veterinary consumption. Documented identity and documented purity are what matter most when sourcing a compound, both of which are published on the Axis certificates of analysis page.

Axis Peptide Labs supplies reference compounds for laboratory, academic, and institutional research only. All products are for research and identification purposes only. They are not for human or veterinary use, and are not a food, cosmetic, drug, or medical product. This article is educational and does not constitute medical, health, or usage advice.

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