Yes, it’s generally safe to use Lexapro, also known as escitalopram, while breastfeeding.
Research shows that maternal doses up to 20 mg daily produce low levels in milk and wouldn’t typically be expected to cause any adverse effects in breastfed infants 1 , especially those older than two months.
However, a few cases 2 of minor behavioral issues, a seizure-like event in an infant also exposed to bupropion, and one case 3 of necrotizing enterocolitis have been reported. But keep in mind that these situations aren’t definitively linked to Lexapro and remain relatively rare. It's important to monitor your baby for any changes such as drowsiness, restlessness, agitation, poor feeding, or weight gain issues.
Overall, if Lexapro is required for your mental health, it's not a reason to discontinue breastfeeding. Always consult with your healthcare provider regarding your medication and breastfeeding.