it was demonstrated that cb-154 , like tryptophan , 5-hydroxytryptophan , lsd or fenfluramine in previous experiments , potentiates the flexor reflex of the spinal rat , and this effect of cb-154 is prevented by serotonin antagonists -- cryproheptadine and danitracen .
C0041249
tryptophan
C0000578
5-hydroxytryptophan