In the anesthetized chimpanzee, L-159282 (1 mg/kg, iv) produces 100% inhibition of the AII pressor response and is still active (52%) at 24 h. In aortic coarcted (high renin) rats, L-159282 (3 mg/kg, p.o.) reduces blood pressure to normotensive (< 120 mm Hg) levels without reflex tachycardia. This dose of L-159282 reduces blood pressure to approximately the same level as both losartan (3 mg/kg, p.o.) and enalapril (3 mg/kg, p.o.) in this model[1].