A cerebral vasodilator that acts as a calcium blocker.

Mca-Gly-Ala-Lys-Arg-His-Arg-Lys-Val-NH2

β-Endorphin, an endogenous opioid neuropeptide, is an opioid receptor agonist. β-Endorphin binds preferentially to μ-opioid receptors and is produced in certain neurons of the central and peripheral nervous system and is one of three endorphins produced in humans. β-Endorphin can be used to reduce stress and maintain homeostasis in the body and is involved in neurological pain perception regulation.