Angiotensin II receptor antagonist for the prevention or treatment of systemic diseases in cats

A method for the treatment of a systemic disease in a cat in need thereof, the method comprising once daily oral administration of a therapeutically effective amount of angiotensin II receptor 1 (AT-1) antagonist (sartan) to said cat, wherein the systemic disease is chronic kidney disease, and the therapeutically effective amount of the sartan is about 3.0 mg/kg of body weight, wherein the angiotensin II receptor 1 (AT-1) antagonist is selected from the group consisting of candesartan, eprosartan, irbesartan, losartan, tasosartan, telmisartan, valsartan, and a pharmaceutically acceptable salt thereof.