Buy 4, Get 1 Free on eligible vialsSubscribe & Save · 10% off every deliveryCertificates of Analysis on requestSame-day dispatch when paid by 12:00 pm PacificOne discount per orderQualified laboratories · Age 21+
For laboratory research use only — not for human or veterinary use

Buy 4, Get 1 FreeAdd any 5 research vials — the lowest-priced one is free.

Flat $14.95 contiguous-US shipping under 6 vials. 6+ vials use the bulk freight estimate at checkout.

Catalog

Compounds, vials, and blends

Best peptide company

Research compound catalog

Best peptide company: One Source Peptides is a research peptide supplier with research peptides for sale and peptide prices at the unit list price, so cheapest peptides can be compared on each card. Research use only. Not for human or animal use. 33 compounds · 51 sizes.

Members discount: membership is not offered. Subscribe & Save is 10% off every delivery. One discount per order.

Prices are the unit list price, before the cart offer. Sizes without a published price say price on request.

Research themes

Choose a research theme

Pick a theme to see the catalog materials filed under it. These groupings are for laboratory discussion only. They are not protocols, dosing guidance, or promises about human outcomes.

Stack Advisor — Research themes

Ask about research pathways

Pick a research pathway, or ask in the field below. The reply plays here and stays in this tab.

Catalog research themes. Not a protocol, a dose, or a claim about human outcomes.

Quick compliance note: One Source Peptides materials are Research Use Only — not for human or veterinary use, and not medical advice. I can map your topic to catalog research compounds and published research themes, and point you to literature. I will not give dosing, treatment plans, or disease claims. Everything should be verified against the lot Certificate of Analysis and peer-reviewed sources.

Any other questions? Look below.