Sleep & Circadian · price comparison
Where to Buy Melatonin: Cheapest Vendor in 2026
Melatonin pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy. The cheapest source we track is Disguised Alpha at $0.020/mg.
Melatonin vendor ranking: cheapest first
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for Melatonin.
Coupon codes
Every active vendor coupon for Melatonin, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
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What is Melatonin?
Melatonin (chemical name N-acetyl-5-methoxytryptamine) is an endogenous neurohormone synthesized primarily by the pineal gland and, in smaller quantities, by the retina, gut, skin, bone marrow, lymphocytes, and mitochondria across most tissues. It is the body's principal circadian signaling molecule, translating environmental light/dark information into an internal chemical representation of biol… Read the full Melatonin research profile
Buying Melatonin: FAQ
Where can I buy Melatonin online?
Melatonin has 1 in-stock listing from research peptide vendors tracked on BodyHackGuide. The cheapest current price per mg is Disguised Alpha at $0.020/mg. Tap any "Buy" button on this page to go directly to the vendor's product page.
What's the cheapest price for Melatonin?
The lowest price per mg we track comes from Disguised Alpha at $0.020/mg ($44.99 for 2260mg). Prices change often, so check the vendor before you buy.
Is buying Melatonin 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 Melatonin?
Melatonin is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell Melatonin 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.