PRECAUTIONS: See also Warning section.Before taking this product, tell your doctor or pharmacist if you are allergic to rifampin or isoniazid; or to other rifamycins (such as rifabutin, rifapentine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: previous severe reaction from isoniazid (such as liver disease), liver disease, kidney disease, alcohol use, HIV infection, diabetes, numbness/tingling of arms/legs (peripheral neuropathy), recent childbirth, a certain blood disorder (porphyria).Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).Alcohol may increase the risk of liver disease. Avoid alcoholic beverages while using this medication.This product may cause live bacterial vaccines (such as typhoid vaccine) not to work as well. Therefore, do not have any immunizations/vaccinations while using this medication without the consent of your doctor.During pregnancy, this product should be used only when clearly needed. When rifampin is taken during the last few weeks of pregnancy, the risk of bleeding in both mother and infant may be increased. Tell your doctor immediately if you notice any bleeding in your newborn. Discuss the risks and benefits with your doctor.This product passes into breast milk but is unlikely to harm a nursing infant. Consult your doctor before breast-feeding.
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