<p>Based on the mechanism of action, Lenalidomide can cause embryo-fetal harm when administered to a pregnant female and is contraindicated during pregnancy. There is no information regarding the presence of Lenalidomide in human milk, the effects of Lenalidomide on the breastfed infant, or the effects of Lenalidomide on milk production. Because many drugs are excreted in human milk and because of the potential for adverse reactions in breastfed infants from Lenalidomide, advise women not to breastfeed during treatment with Lenalidomide.</p>