5 pretreatment of animals with drugs that increase brain 5-ht action ( l-tryptophan with a monoamine oxidase inhibitor , or 5-hydroxytryptophan ) , or antagonize the action of 5-ht ( cyproheptadine ) did not abolish or obviously increase chloralose-induced myoclonus .
C0041249
l-tryptophan
C0000578
5-hydroxytryptophan