Semax vs Selank
Which should you choose? Here's what you need to know.
The short answer
Semax is more stimulating and focus-oriented. Selank is calming and anxiety-reducing. Both are nootropic peptides from Russian research.
Semax
Cognitive / NeuroSemax is a synthetic fragment of ACTH. It's studied for cognitive enhancement, focus, and neuroprotection. Users often describe it as stimulating without jitteriness.
Choose Semax if:
You want sharper focus and cognitive performance, similar to a stimulant but without the crash.
Selank
Cognitive / NeuroSelank is a synthetic tuftsin analog with anxiolytic properties. It's studied for reducing anxiety and stabilizing mood while maintaining mental clarity.
Choose Selank if:
Your main goal is anxiety relief with a clear-headed calm, or you're sensitive to stimulants.
Using both together
Semax + Selank is a popular nootropic stack. Semax provides the focus boost while Selank smooths out any overstimulation.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options.
Ready to buy?
Our top-rated vendor for each, based on trust scores, purity testing, and price.
Best Semax Vendor
$29.99(10mg)
Best Selank Vendor
$43.00(10mg)
Where does this data come from?
We check vendor prices every day and pull in real purity test results from independent labs — not vendor claims. No vendor can pay to rank higher. See our full methodology.