Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Fosinopril (generic name: fosinopril) and Olmesartan (generic name: olmesartan, brand name: Benicar) are both medications used to treat high blood pressure, but they belong to different drug classes. Fosinopril is an ACE inhibitor, which works by blocking a chemical that tightens blood vessels, making them more relaxed. On the other hand, Olmesartan is an angiotensin II receptor blocker (ARB) that lowers blood pressure by blocking a hormone that narrows blood vessels. Fosinopril is also used for heart failure and is approved for use in children 6 to 16 years old weighing 50 kg, while Olmesartan is approved for use in children as young as 6 years old. Both medications are taken once daily, but Fosinopril may cause a dry cough, which is not a common side effect of Olmesartan. Additionally, both medications can raise potassium levels and are not safe to use during pregnancy. Both medications require blood tests to check kidney health, whereas Olmesartan may cause severe diarrhea in rare cases.
Fosinopril
Olmesartan (Benicar)
Fosinopril
Olmesartan (Benicar)
Summary of Monopril vs. Benicar
Summary for ACE inhibitor
Prescription only
Fosinopril sodium (Monopril) is an angiotensin-converting enzyme (ACE) inhibitor. It's used to treat high blood pressure in adults and children. It can also treat heart failure. Fosinopril comes as a tablet that's taken by mouth once daily. Most people don't experience any side effects from fosinopril. But people who did reported cough and dizziness. Though rare, fosinopril and other ACEI inhibitors can cause angioedema, which can be serious. Brand name Monopril has been discontinued; fosinopril is only available as a generic medication.
Summary for ARB
Prescription only
Olmesartan medoxomil (Benicar) is a medication that lowers blood pressure in adults and children ages 6 years and older. It's an angiotensin II receptor blocker (ARB) and works mainly by widening and relaxing your blood vessels to lower pressure. This medication is taken by mouth, typically once per day. People don't usually experience much side effects from olmesartan (Benicar), though some people have reported mild and temporary dizziness.