Can I take leflunomide while pregnant?

You cannot take leflunomide while pregnant, as it can cause problems in fetus. If you plan to become pregnant, or become pregnant while taking leflunomide, then you should tell your doctor immediately. You will need to stop taking leflunomide and flush the medication out of your system with a drug called cholestyramine. Without this drug, it could take up to two years before the drug is out of your body. Breastfeeding women should also not take this medication because leflunomide can possibly pass through breast milk and harm the newborn.