Question: what is the difference between metoprolol and losartan?
Answer: Metoprolol and losartan belong to different drug classes. Metoprolol is a beta-blocker (beta-adrenergic blocking agent) and losartan is an angiotensin receptor blocker (ARB). Side effects of metoprolol and losartan that are similar include diarrhea, fatigue, insomnia, and impotence.