Cilazapril
Cilazapril is an angiotensin-converting enzyme (ACE) inhibitor used primarily to treat hypertension and heart failure. It works by blocking the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, thereby relaxing blood vessels and lowering blood pressure. This medication is typically prescribed when lifestyle modifications alone are insufficient to control blood pressure.
Cilazapril is an ACE inhibitor that lowers blood pressure by relaxing blood vessels and is used to treat hypertension and heart failure.
Key facts at a glance
- ATC
- C09AA08
- RxNorm
- 21102
- Generic
- Cilazapril
- Class
- atc-c09
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- tablet
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Cilazapril is indicated for the treatment of essential hypertension (high blood pressure) and congestive heart failure. It may also be used to improve survival following a heart attack and to protect kidney function in patients with diabetes.
Cilazapril inhibits the angiotensin-converting enzyme (ACE), which prevents the conversion of angiotensin I to angiotensin II. By reducing angiotensin II levels, the medication causes blood vessels to dilate, decreases fluid retention, and ultimately lowers blood pressure.
Common side effects include dry cough, dizziness, headache, and fatigue. It is contraindicated during pregnancy and in patients with a history of angioedema. Renal function and potassium levels should be monitored during treatment. Patients should inform their healthcare provider of any planned surgeries or dental procedures.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy