THE BEST SIDE OF BUY ACTAVIS PROMETHAZINE WITH CODEINE SYRUP

G-protein coupled opioid receptor that functions like a receptor for endogenous alpha-neoendorphins and dynorphins, but has lower affinity for beta-endorphins. Also functions as a receptor for various synthetic opioids and with the psychoactive diterpene salvinorin A. Ligand binding causes a conformation alter that triggers signaling via guanine nu