Established 2024 —
and still shipping every day.

Three in four researchers who order from us order again. Everything listed is stocked in California and ships the same day, and the person running the company is the one who answers your email. Supplied for in-vitro research use only.

Browse Research Peptides View Test Results
75% reorder rate Shipping since 2024 Ships from California Free 2-day over $250
Coastal Peptides research vials

Check any vial

Every batch goes to an independent lab before it ships. Enter the lot number from your label to pull up that batch's report. No account needed.

Shop by category

View all products →
Metabolic research peptides Metabolic Wellness research peptides Wellness Healing research peptides Healing GHRP research peptides GHRP

Why researchers stay with us

Three years in, and counting

A lot of the suppliers advertising today weren't here last year. We've shipped every day since 2024, and three in four researchers who order from us come back.

Stocked in California

Orders placed before the cutoff go out the same business day. If something is running behind, we tell you before you pay rather than after.

A real person answers

Most emails get a reply within an hour or two. If we ship the wrong item, we verify it and send the correct product at our cost.

Independently tracked

Peptigrity Trust Score for coastalpeptides.com

There are people behind this

Somebody will always be cheaper. We've decided not to compete there. Our price covers independent testing on every batch, stock sitting in a California warehouse, card processing, and replacing orders we get wrong. Take those away and we could match anyone. We'd rather not.

Answered by a person, not a ticket queue Our mistakes are ours to pay for Volume pricing on every product

Research & reference

All articles →
BUYING & TESTING How to verify a supplier before you order Most advice about choosing a peptide supplier comes down to "look for third-party testing," which everyone now claims. It's no longer a… READ MORE » BUYING & TESTING What a $10 vial leaves out You've seen the videos. Ten vials for a hundred dollars, filmed in a garage or a storage unit, usually with a countdown… READ MORE » BUYING & TESTING How to read a certificate of analysis Almost every research peptide supplier publishes certificates of analysis now. That's an improvement over a few years ago, when most published nothing.… READ MORE »

Ready when you are

Full catalog, current pricing, and volume tiers on every product. Free shipping over $250.

Shop All Products Read the Research