Key takeaways
Candesartan (Atacand) and valsartan (Diovan) are both angiotensin II receptor blockers (ARBs) used to treat high blood pressure in adults and children. They also help manage heart failure, but valsartan is additionally used to lower the risk of death after a heart attack. Candesartan is typically taken once or twice daily, while valsartan can be taken once or twice daily depending on the condition being treated. Both medications can cause dizziness and high potassium levels, but valsartan has a higher chance of causing dizziness (up to 8%) compared to candesartan (4%). Additionally, valsartan can cause a dry cough, which is less common with candesartan. Both medications are available as lower-cost generics and should be avoided during pregnancy due to potential harm to the unborn baby.
