common side effects of cozaar
Losartan Side Effects. The most common side effects seen in people taking losartan for high blood pressure include back pain, infection, and dizziness. In people taking the drug to treat diabetic nephropathy, common side effects include fatigue, anemia, and diarrhea.
Based on these studies, the most common losartan side effects seen in people with high blood pressure include: 1  Infection, such as the common cold or flu -- in up to 8 percent of people. 2  Dizziness -- up to 3 percent. 3  Nasal congestion -- up to 2 percent.  Back pain -- up to 2 percent.