Live · Ranked by $/mg ascending
Cheapest research peptides
The cheapest research peptide tracked is Glutathione at $0.03/mg from Novagloresearch. Every peptide we track, ranked by the lowest tracked price per milligram across all vendors. Vial sizes are normalized so a 5 mg vial and a 10 mg vial can be compared on equal terms.
Prices refreshed 2026-06-03
Caliber may earn a commission on outbound “Buy” links — this never affects ranking, which is purely lowest $/mg first. For research use only; not for human consumption.
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Peptide
Cheapest vendor
Lowest $/mg
Looking for a specific compound? Browse the full A–Z peptide directory or browse by research category.
$/mg is computed from each vendor's listed vial price and total peptide mass. Vials sold as ranges, bundles, or non-mg formats are excluded from the price-per-mg ranking. For research use only.