Side effects

Possible side effects of angiotensin II blockers can include:

• Dizziness
• Higher than normal potassium levels in the blood (hyperkalemia)
• Swelling of the skin due to a buildup of fluid (angioedema)

Some people taking the angiotensin II receptor blocker olmesartan have reported intestinal problems. Talk to your doctor if you develop severe diarrhea or lose a lot of weight while taking this medication.

Don't take angiotensin II receptor blockers if you're pregnant or plan to become pregnant because the drugs can harm a developing fetus.