the sensitivity of the alpha-adrenergic hypothalamic pituitary system , as indicated by growth hormone ( gh ) release after clonidine ( 0.15 mg i.v . ) , was studied in nine chronic schizophrenic in-patients ( study 1 ) under long-term neuroleptic ( nl ) therapy and after 5 days ' drug withdrawal and in 17 chronic schizophrenic in-patients ( study 2 ) under long-term nl therapy and after 12 days ' drug withdrawal .
C0009014
clonidine
C0038587
drug withdrawal