Lisinopril (Prinivil, Zestril Generic) – Complete Product Information

What is Lisinopril?

Lisinopril is a prescription medication in a class of drugs called angiotensin-converting enzyme (ACE) inhibitors. It is FDA-approved to treat high blood pressure (hypertension), heart failure, and to improve survival after a heart attack. It may also be prescribed to protect the kidneys in people with diabetes.

Lisinopril works by relaxing blood vessels, which lowers blood pressure and makes it easier for the heart to pump blood. It is one of the most commonly prescribed medications in the United States.

What is Lisinopril Used For?

According to the FDA, lisinopril is approved to treat:

• ✔️ Hypertension – lowers high blood pressure to reduce the risk of stroke, heart attack, and kidney problems.
• ✔️ Heart failure – helps the heart pump more efficiently and reduces symptoms.
• ✔️ Post-heart attack – improves survival after a myocardial infarction.
• ✔️ Diabetic kidney protection – slows progression of kidney damage in certain patients.

Doctors may prescribe it alone or with other blood pressure medications. Always follow your prescriber's instructions.

Available Dosages and Forms

Lisinopril is available as oral tablets in several strengths:

• Tablets: 2.5 mg, 5 mg, 10 mg, 20 mg, 30 mg, 40 mg

Generic lisinopril is available in the same strengths and is equally effective, usually at a lower cost.

Brand Prinivil / Zestril vs Generic Lisinopril

Both contain the same active ingredient and meet the same FDA standards for quality, safety, and effectiveness. The only significant difference is price: generic lisinopril is typically much less expensive. Most insurance plans prefer or require generics.

When comparing prices, you may see both options. Choose the one that best fits your budget and prescription.

How to Take Lisinopril Safely

Always follow your healthcare provider's instructions. Lisinopril is usually taken once daily, with or without food.

1. Take lisinopril at the same time each day.
2. If you miss a dose, take it as soon as you remember unless it is close to your next dose.
3. Do not take a double dose to make up for a missed one.
4. Avoid potassium supplements or salt substitutes containing potassium unless your doctor tells you otherwise.

Common Side Effects and Precautions

Like all medications, lisinopril may cause side effects. The most common include:

• Dry cough
• Dizziness or lightheadedness
• Headache
• Fatigue
• Nausea

Serious side effects requiring immediate medical attention include swelling of the face, lips, tongue, or throat, difficulty breathing, and signs of kidney problems. This is not a complete list. Read the full FDA label or consult your pharmacist.

Important: Lisinopril may interact with potassium supplements, certain diuretics, and NSAIDs. Tell your doctor about all medications and supplements you take.

📚 Medical Sources We Rely On

All product information is based on official FDA labeling (FDA Lisinopril Approval) and peer-reviewed research available on PubMed. Our content is reviewed by a licensed pharmacist. See our About page for credentials.