“…Others (antiemetic phenothiazines [73]) have anticholinergic properties, which reduce parasympathetic vasodilatory influence on the vasculature. Chronic administration of sympathomimetics (fenfluramine [74], phencyclidine [75]) can have such pronounced effects on the systemic and pulmonary arterioles that HTN may become permanent even after drug discontinuation. Occasionally, exogenous hormones (e.g.…”