5 vendors sell PE-22-28. The most common size, 8 mg, costs $54.00–$60.00 across 3 of them as of Oct 14, 2026; the cheapest is Core Peptides at $54.00.
Every vendor's price per mg, side by side. Prices include the sales and codes shown. Buy links may earn us a commission.
Also known as: Mini-spadin
| Vendor | Size | Price | $/mg | Buy |
|---|---|---|---|---|
| peptides.gg 10 mg | 10 mg | $40.00 | $4.00 | Buy → |
| Modern Aminos 10 mg | 10 mg | $54.00 | $5.40 | Buy → |
| Core Peptides 8 mg | 8 mg | $54.00 | $6.75 | Buy → |
| Solution Peptides stock not verified 8 mg × 10 vials | 8 mg × 10 vials + 1 variant
| $540.00 | $6.75 | Buy → |
+ 1 variant
| ||||
| Atomik Labz 8 mg × 10 vials | 8 mg × 10 vials + 1 variant
| $540.00 | $6.75 | Buy → |
+ 1 variant
| ||||
PE-22-28 is a seven-amino-acid peptide derived from spadin, which is itself a fragment of the propeptide of the protein sortilin.
PE-22-28 is a seven-amino-acid peptide with the sequence GVSWGLR. That makes it a small peptide, close in length to Selank. It is a shortened analog of spadin, so some vendors list it as mini-spadin. Vendors often shelve it near Selank and Semax, and sell it research-use-only as a lyophilized powder in sealed vials, usually 8 mg or 10 mg each.
With 8 mg and 10 mg vials both common, two stickers that look close can hide a 25 percent gap in content. The table above divides price plus a shipping estimate by the milligrams in each vial, so listings rank on cost per mg rather than headline price.
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Also in Nootropic.