Common side effects of losartan include dizziness, lightheadedness, or fainting, as well as symptoms related to changes in potassium and sodium levels, such as irregular heartbeat, muscle cramps, weakness, and numbness or tingling in the hands, feet, or lips. Stomach pain and sweating may also occur. It's important to report any side effects to your healthcare provider.
Key takeaway: Some common side effects of losartan include dizziness, irregular heartbeat, muscle cramps, and weakness.