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. Samples for quality evaluation can be arranged for serious buyers, with sample cost credited against the first bulk order in most cases. Our pricing structure supports both small laboratory orders and large wholesale contracts, and payment options include major transfer and trade platforms.