Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Lisinopril (Zestril) and captopril are both ACE inhibitors used to treat high blood pressure and heart failure, but they have some key differences. Lisinopril is typically taken once daily, while captopril needs to be taken two or three times a day on an empty stomach. Lisinopril is available in both tablet and liquid forms, making it easier for people who have trouble swallowing pills, whereas captopril is only available in tablet form. Captopril can start working within 15 minutes, but it takes about a week to fully kick in. Lisinopril takes about an hour to start lowering blood pressure and up to six hours for its maximum effect. Both medications can cause a dry cough, but captopril is also known to cause changes in taste and skin rash. Additionally, both medications are available in generic forms, but lisinopril is generally cheaper. Both medications should not be used during pregnancy and can cause serious side effects like angioedema and high potassium levels.
Lisinopril (Zestril)
Captopril
Lisinopril (Zestril)
Captopril
Summary of Lisinopril vs. Captopril
Summary for ACE inhibitor
Prescription only
Lisinopril (Zestril) is an angiotensin-converting enzyme (ACE) inhibitor that's a first-choice medication used for lowering blood pressure. It's also approved to treat symptoms of heart failure and also to lower the risk of death after a heart attack. Lisinopril (Zestril) is a tablet that's taken by mouth, typically once daily. It's also available as an oral solution. Some common side effects of this medication include cough, dizziness, and headache.
Summary for ACE inhibitor
Prescription only
Captopril is an angiotensin-converting enzyme (ACE) inhibitor. It's used in adults to treat high blood pressure, heart failure, and to prevent the worsening of kidney problems in people who have diabetes. Captopril is available as a tablet that's taken by mouth two to three times per day. Your healthcare team will help determine your dose based on different factors, such as how high your blood pressure is and what other medications you're taking. Side effects include a dry cough, changes in taste, and dizziness. Brand name Capoten has been discontinued; captopril is only available as a generic medication.