Lisinopril is an ACE inhibitor used to treat several conditions. Here’s a quick overview:
- What it is and what it’s for
- Brand names: Zestril, Prinivil (generic lisinopril)
- Uses: high blood pressure (hypertension), heart failure, and after a heart attack (post-MI) to improve survival in some patients.
- How it works
- Blocks the angiotensin-converting enzyme (ACE), reducing angiotensin II, which causes blood vessels to relax and widen. This lowers blood pressure and reduces strain on the heart. It can also raise potassium levels a bit.
- Common dosing patterns (tells you what doctors often do; exact dose is up to your clinician)
- Hypertension: starting around 5–10 mg once daily, may be increased to up to about 40 mg/day (in one or two doses) depending on response and tolerance.
- Heart failure: often starts low (e.g., 2.5–5 mg daily) and may be titrated up to 20–40 mg daily.
- Post–heart attack: starting around 5 mg daily after stabilization, then titration to a higher target (commonly up to 20–35 mg daily) as tolerated.
- Dosing varies a lot by individual factors (kidney function, blood pressure, other meds).
- Common side effects
- Dizziness, lightheadedness from lowered blood pressure
- Persistent dry cough
- Fatigue
- High potassium (hyperkalemia) risk
- Rare: kidney function changes, angioedema (swelling of face/tloor/tongue; more rare but serious)
- Important safety notes
- Pregnancy: generally contraindicated (can cause birth defects). If you become pregnant, stop and contact your clinician.
- Angioedema: swelling of face/lips/tongue and difficulty breathing, more common in some people; seek urgent care if it happens.
- Kidney function and potassium: regular blood tests may be needed to monitor kidney function and potassium.
- Interactions: may interact with potassium supplements or potassium-sparing diuretics (risk of high potassium), NSAIDs (can affect blood pressure control and kidney function), and certain diabetes/heart medications. Avoid starting sacubitril/valsartan within 36 hours of stopping an ACE inhibitor like lisinopril due to risk of angioedema.
If you’re considering lisinopril, currently taking it, or wanting to know about a specific situation (e.g., side effects, dosing for a certain condition, pregnancy, interactions with other meds), tell me more and I can tailor the information. Also, please consult a healthcare provider for dosing and safety in your case.