TRPV1 receptor
(Z)-Capsaicin is the cis isomer of capsaicin, acting as a TRPV1 agonist. (Z)-Capsaicin may also blocks the neruonal calcium channel.
(Z)-Capsaicin (Zucapsaicin) significantly attenuates nociceptive behavior after oral administration in rats. (Z)-Capsaicin is also tolerated in the primary or recurrent experimental genital herpes simplex virus infection in guinea pigs.