BPC-157 + TB-500 Spray contains two synthetic peptides in combination. BPC-157 is a 15-residue peptide (Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val) derived from a partial sequence of a gastric protein; TB-500 is a synthetic peptide derived from the actin-binding region of thymosin β4.

No specific receptor has been identified for BPC-157; in endothelial and vascular preparations it is reported to activate Src–caveolin-1–eNOS signaling and to interact with the nitric oxide system. Thymosin β4 binds monomeric G-actin in a 1:1 complex, regulating actin polymerization.

BPC-157 + TB-500 Spray is supplied as a pre-dissolved aqueous solution of both peptides in a 15 mL metered dispensing container, a format intended to simplify aliquoting and laboratory handling without a separate dissolution step. Keep the container sealed and refrigerated, protected from light, and avoid freezing; identity and purity of the dissolved material should be confirmed analytically before use.

Research use only. This material is sold for in-vitro laboratory research and development purposes exclusively. It is not a drug, food, or dietary supplement, has not been evaluated by the FDA, and must not be used in humans or animals.