fosinopril vs lisinopril
Side-by-side comparison of fosinopril and lisinopril Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Monopril
Prinivil, Zestril
Fosinopril is a medicine that lowers blood pressure. It can also help manage heart failure.
Lisinopril and hydrochlorothiazide is a drug that lowers blood pressure. It contains two medicines that work together to help your heart.
Fosinopril is used to treat high blood pressure. It can be used alone or with a water pill (diuretic). Fosinopril also helps manage heart failure when used with other medicines.
This medicine treats high blood pressure. Lowering blood pressure reduces the risk of strokes and heart attacks. You should also manage cholesterol, diabetes, and quit smoking to improve your heart health.
Fosinopril belongs to a class of drugs called ACE inhibitors. It works by blocking a substance in your body that tightens blood vessels. This helps your blood vessels relax and lowers your blood pressure.
Lisinopril is an ACE inhibitor that widens blood vessels. Hydrochlorothiazide is a diuretic that helps your body get rid of extra salt and water. Together, they lower blood pressure more effectively.
- • Cough
- • Dizziness
- • Nausea
- • Vomiting
- • Dizziness
- • Headache
- • Cough
- • Feeling tired
- • Diarrhea
- Tiredness 239
- Diarrhea 232
- Difficulty breathing 210
- Feeling sick to your stomach 205
- Medicine not working 182
- Feeling tired 19,347
- Feeling sick to your stomach 17,995
- The medicine is not working 17,182
- Loose stools 16,772
- Difficulty breathing 13,649
Fosinopril can harm your unborn baby, even causing death. Stop taking fosinopril as soon as you know you are pregnant.
This drug can harm your unborn baby, even causing death. Stop taking this medicine as soon as you know you are pregnant.
Do not take fosinopril if you are pregnant. It can cause serious harm or death to your unborn baby. Talk to your doctor about other blood pressure medicines if you are breastfeeding.
Do not take this medicine if you are pregnant. It can cause serious harm or death to your unborn baby. Talk to your doctor about safe alternatives if you are breastfeeding.
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How to Read This fosinopril vs lisinopril Comparison
fosinopril is classified in the ACE Inhibitor drug class, while lisinopril sits within the ACE Inhibitor class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, fosinopril has 1,068 submissions while lisinopril has 84,945. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between fosinopril and lisinopril — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.