Research peptides, thoughtfully sourced.

Research peptides are synthetic chains of amino acids supplied for laboratory research use only. They are sold by compound name and labeled quantity, not as medicines, and are not for human or animal use. Refresh Research stocks them in vials, capsules and liquid sprays.

Yes. A certificate of analysis is published per product and lot on our Lab Reports page and linked from each product page. Match the lot number printed on your label to the report. COAs for newly added listings are published as batch documentation becomes available.

Lyophilized peptides arrive as a dry powder and are reconstituted in the lab, usually with bacteriostatic water. Add the diluent slowly down the inside wall of the vial rather than directly onto the powder, and swirl gently instead of shaking. Follow your laboratory’s established procedures — see our full reconstitution guide.

Lyophilized vials are typically kept cold, sealed and protected from light and moisture until reconstitution. Once reconstituted, material is generally refrigerated and used within the window your protocol specifies. Always follow the storage conditions supplied with the received material. More detail in our storage guide.

It is the labeled quantity of material in one vial — for example, 10 mg of lyophilized peptide. It describes the contents of the product, not directions for use. Capsules and 30 mL sprays state their own per-unit quantities.

They are our catalog labels for three incretin-pathway research peptides, grouped by how many receptors they act at: GLP-1 at the GLP-1 receptor, GLP-2 at the GIP and GLP-1 receptors, and GLP-3 at the GIP, GLP-1 and glucagon receptors. Each is offered in several labeled vial strengths.

Vials hold lyophilized material that is reconstituted in the lab. Capsules and 30 mL liquid sprays are ready-measured formats. The same compound in different formats is not interchangeable, so compare the labeled quantity per unit carefully before ordering.

No. Every product is sold for laboratory research only. Nothing in the catalog is for human or animal use, or for therapeutic or diagnostic applications, and purchasers must be 21 or older.