Patients with glaucoma, prostate enlargement, cardiac failure and myocardial infarction. The drug may impair alertness and abilities to drive a car or operating machinery. Because of the possibility of cross-sensitivity, fluphenazine hydrochloride should be used cautiously in patients who have developed cholestatic jaundice, dermatoses or other allergic reactions to phenothiazine derivatives. Psychotic patients on large doses of a phenothiazine drug who are undergoing surgery should be watched carefully for possible hypotensive phenomena. Moreover, it should be remembered that reduced amounts of anesthetics or central nervous system depressants may be necessary. The effects of atropine may be potentiated in some patients...