Lovenox and Breastfeeding

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Lovenox and Breastfeeding

Question:

I am taking Lovenox shots and I am pregnant. I will continue taking the Lovenox shots for about two more months after having my baby. Can I breastfeed my baby? Does the Lovenox get into breast milk?

Answer:

There are no formal studies demonstrating the safety of enoxaparin (Lovenox) when it is taken by a mother who is breastfeeding. However, what we do know about this blood-thinning medicine makes us feel comfortable that it is probably safe. The medicine does not cross the placenta, and it probably does not enter breast milk in large quantities. It is digested (and destroyed) in the digestive tract after being swallowed, so a baby who did get exposed to it in breast milk would be unlikely to be affected.

This medicine can thin bones over time when it is used for a long period. If you need to take this drug during pregnancy and through breastfeeding, be sure to take supplements of calcium and vitamin D. This will help maintain your bone strength as much as possible. You need extra calcium and vitamin D during breastfeeding anyway, since you are sharing these nutrients with your baby.

Mary Pickett, M.D., is a lecturer for Harvard Medical School and an assistant professor of medicine at Oregon Health & Science University in Portland, OR. At OHSU, she practices general internal medicine and teaches medical residents and students.

Last updated:	July 20, 2009