Neuropeptide Y (porcine) is a widely distributed endogenous neuropeptide which mediates its physiological effects through at least four receptors, Y1, Y2, Y4, and Y5. Neuropeptide Y (porcine) is one of the most abundant peptides in the central nervous system and is highly conserved throughout evolution. Neuropeptide Y (porcine) is involved in a range of biochemical processes including appetite control, sexual behaviour and blood pressure regulation.