Lisinopril and other ACE inhibitors are contraindicated in pregnancy, particularly second and third trimesters. Is lisinopril safe in pregnancy has clearly negative answer. Switch to pregnancy-compatible antihypertensive. Always discuss with your prescriber.
Why ACE inhibitors are contraindicated
- Fetal kidney damage and renal failure
- Oligohydramnios (low amniotic fluid)
- Skull abnormalities (calvarial hypoplasia)
- Pulmonary hypoplasia
- Possible birth defects with first-trimester exposure
- Increased risk of stillbirth
What to do if pregnant on lisinopril
- Stop immediately
- Switch to pregnancy-compatible antihypertensive (labetalol, methyldopa, nifedipine)
- Contact OB/GYN promptly
Pre-pregnancy planning
Women on ACE inhibitors planning pregnancy should switch to pregnancy-compatible alternatives before conception.
Lisinopril in breastfeeding
Generally avoided. Limited data. Other antihypertensives preferred.
Frequently Asked Questions
What if I took lisinopril before knowing I was pregnant?
First-trimester exposure has some risk but most pregnancies proceed. Stop immediately, contact OB/GYN.
Are ARBs (losartan, valsartan) the same?
Same restrictions. Both ACE inhibitors and ARBs contraindicated in pregnancy.
Can I switch back postpartum?
Yes for non-breastfeeding. For breastfeeding, alternatives often preferred.
What about during breastfeeding?
Generally avoided. Other antihypertensives preferred.
Why are ACE inhibitors used outside pregnancy?
Excellent for hypertension, kidney protection, heart failure. Just contraindicated in pregnancy.
The bottom line on lisinopril in pregnancy
Lisinopril and other ACE inhibitors are contraindicated in pregnancy. Switch to labetalol, methyldopa, or nifedipine. Discuss with prescriber before pregnancy if possible.