 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  drug leave the body before attempting to father a child. (See How to Use section.) Consult your doctor for more details. This drug may pass into breast milk and could have undesirable effects on a nursing infant. Breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.The interactions of Leflunomide Oral: See also How to Use Section. Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: warfarin, drugs affecting the liver (such as methotrexate), cholestyramine, other drugs that weaken the immune system (such as tacrolimus, cyclosporine). Because teriflunomide (used to treat multiple sclerosis) is very similar to this medication, do not take it while you are taking leflunomide. Does Leflunomide interact with other drugs you </s>