Enzyme · price comparison
Where to Buy Papain: Cheapest Vendor in 2026
Papain pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy.
No in-stock Papain listings right now.
Vendor stock changes often, so check back. Use the compound profile to track research progress in the meantime.
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for Papain.
Coupon codes
Every active vendor coupon for Papain, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
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What is Papain?
Papain is a proteolytic enzyme extracted from the milky latex of the unripe fruit of the papaya tree (Carica papaya), a tropical plant native to southern Mexico and Central America and now cultivated across the tropics. It is classified biochemically as a cysteine protease (EC 3.4.22.2) — meaning that its catalytic machinery depends on a reactive cysteine residue at its active site — and is appro… Read the full Papain research profile
Buying Papain: FAQ
Where can I buy Papain online?
Papain is currently between in-stock listings across the vendors we track. Bookmark this page and check back, since vendor stock changes often.
What's the cheapest price for Papain?
No vendor we track lists it as in stock, so there is no price to compare. Check back when listings come back in stock.
Is buying Papain online safe?
Vendor safety varies. BodyHackGuide scores every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). This page ranks listings by price per mg, not by score, so check each vendor's score breakdown on its BodyHackGuide profile before you buy.
Do I need a prescription for Papain?
Papain is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell Papain for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide earns a commission on some of its links, at no additional cost to you. Vendor rankings are based on price per mg from the listings we track. We don't accept payment for editorial placement. See our full affiliate disclosure .
Free 2026 Peptide Cheat Sheet (PDF)
38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers.