Bradykinin is a nine-amino-acid vasoactive peptide of the kallikrein-kinin system that activates B1 and B2 receptors to modulate vascular permeability, blood pressure and inflammatory pain signaling. Its broad physiological actions make it a staple in cardiovascular pharmacology research. The product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. Batch records, trial sizes and global shipping are provided for research use. Custom packaging, including customer-branded vials, labels and cartons, can be arranged for distributor and OEM programs. Quality documentation in English is provided for every batch, and re-orders benefit from streamlined processing and stable pricing agreements. A dedicated coordinator follows each order until proof of delivery.