Which should you choose? Here's what you need to know.
Dihexa and Selank are both cognitive / neuro peptides, but they work differently. A potent cognitive-enhancing peptide derived from angiotensin IV. Studied for its potential to promote new neural connections and improve memory. A synthetic analog of the immunomodulatory peptide tuftsin, developed in Russia for its anxiolytic and nootropic properties. Compare vendor pricing and availability below.
On 9 Oct 2026 Peptide Compare tracked 7 vendors selling Dihexa, cheapest in stock $5.00 per mg at Loti Labs, and 56 selling Selank, cheapest $1.63 per mg at Bio Pepz.
A potent cognitive-enhancing peptide derived from angiotensin IV. Studied for its potential to promote new neural connections and improve memory.
A synthetic analog of the immunomodulatory peptide tuftsin, developed in Russia for its anxiolytic and nootropic properties.
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Oct 9, 2026.
Our top-rated vendor for each, based on trust scores, purity testing, and price.
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We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.