4 chlorpromazine ( 30 mg/kg ) once daily for 4 days produces a slight increase in brain 5-hydroxytryptamine ( 5-ht ) concentration on day 5 , but no difference in the rate of brain 5-ht synthesis or the rate of 5-ht accumulation after tranylcypromine and l-tryptophan administration .
C0086045
concentration
C0006104
brain