Losartan is a prescription drug to treat high blood pressure, diabetic nephropathy, and stroke risk. Learn about side effects, warnings, dosage, and more.
Losartan comes as 12.5mg, 25mg, 50mg and 100mg tablets. The usual dose for adults is: 50mg to 100mg, taken once a day to treat high blood pressure or protect your kidneys. 12.5mg to 150mg, taken once a day for heart failure