<p>Leflunomide is not recommended for pregnant women. Pregnancy must be avoided during leflunomide treatment or prior to the completion of the drug elimination procedure after leflunomide treatment. Leflunomide should not be used by nursing mothers. It is not known whether leflunomide is excreted in human milk. Many drugs are excreted in human milk and there is a potential for serious adverse reactions in nursing infants from leflunomide. Therefore, a decision should be made whether to proceed with nursing or initiate treatment with leflunomide, taking into account the importance of the drug to the mother.</p>