Hypersensitivity to haloperidol, butyrophenone and the similar compounds; Comatose states; Alcoholism; Enhanced response to barbiturate, anesthetic and other CNS depressants; Severe heart failure (myocardial disorder and lowering of the blood pressure have been reported); Parkinson's disease (extrapyramidal reactions may occur); Bronchopneumonia; Lesions of the basal ganglia; Patient receiving epinephrine; Pregnant women and women of childbearing potential, nursing mother.