it also prevented the increase in neuroleptic-induced catalepsy following 5-htp , 10 mg/kg.7 tryptophan , like 5-htp , increased the catalepsy seen in mice after u-32,802a and tetrabenazine , and increased the production of 5-hydroxyindol-3-ylacetic acid in the forebrain.8 in the rat , intracerebroventricular injection of physostigmine produced catalepsy which was not modified by methysergide or pcpa but was abolished by atropine .
C0041249
tryptophan
C0000578
5-htp