natalizumab - injection, Tysabri (cont.)
PRECAUTIONS: Before using this medication, tell your doctor or pharmacist if you are allergic to it; 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.This medication should not be used if you have ever had a certain medical condition. Before using this medicine, consult your doctor or pharmacist if you have ever had: a certain virus infection (progressive multifocal leukoencephalopathy-PML).Before using this medication, tell your doctor or pharmacist your medical history, especially of: weakened immune system (such as leukemia, lymphoma, HIV infection, organ transplant), current infections, history of certain virus infections that keep coming back (such as herpes, shingles), mental/mood disorders (such as depression).During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is not known if this drug passes into breast milk. Because of the possible risk to the infant, breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.
DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.This drug should not be used with the following medications because very serious interactions may occur: long-term use of drugs that may weaken the immune system (such as azathioprine, cyclosporine, 6-mercaptopurine, methotrexate, TNF blockers such as adalimumab, etanercept, infliximab), immunomodulators (such as interferon beta).If you are currently using any of these medications listed above, tell your doctor or pharmacist before starting natalizumab.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: short-term use of corticosteroids (such as prednisone).This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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