Losartan is an angiotensin II receptor antagonist. Angiotensin II is a chemical in your blood that tightens your blood vessels. Losartan blocks this effect causing the blood vessels to relax and so lowers your blood pressure.
Losartan is indicated:
• for the treatment of hypertension;
• for the treatment of heart failure in combination with diuretics and/or digitalis medicine;
• for the prevention of stroke in hypertensive patients with left ventricular hypertrophy;
• in the treatment of renal disease in hypertensive, type 2 diabetic patients with proteinuria, as part of their antihypertensive treatment.