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Is it safe for me to breastfeed while taking warfarin?

Iris Rodriguez-Johnson, MD
Pediatrics

Warfarin, according to the  Drugs in Pregnancy and Lactation book by Briggs, Freedman, and Yaffe, is safe and compatible with breastfeeding. Warfarin was not detected in any breastfeeding women in studies that were done and no harmful anticoagulant effects were found in the infant.

According to the manufacturer, the decision to breastfeed while taking warfarin should be made carefully only after consideration of the available alternatives. The American Academy of Pediatrics considers warfarin usually compatible with breastfeeding. Warfarin has not been detected in breast milk in significant amounts. Most experts agree that warfarin therapy poses little risk to the breastfeeding infant. You should talk with your doctor if you are breastfeeding before you start taking warfarin. If you and your doctor decide that you can breastfeed while taking warfarin, your baby's doctor may check their blood to see if the medicine is affecting his or her clotting, too.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.