
Methotrexate, formerly known as amethopterin, is a chemotherapy agent and immune-system suppressant. It is used to treat cancer, autoimmune diseases, and ectopic pregnancies. Types of cancers it is used for include breast cancer, leukemia, lung cancer, lymphoma, gestational trophoblastic disease, and osteosarcoma. Types of autoimmune diseases it is used for include psoriasis, rheumatoid arthritis, and Crohn's disease. It can be given by mouth or by injection.
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| pronounce = | tradename = Trexall, Rheumatrex, Otrexup, others | Drugs.com = | MedlinePlus = a682019 | DailyMedID = Methotrexate | pregnancy_AU = D | routes_of_administration = By mouth, intravenous, intramuscular, subcutaneous, intrathecal | ATC_prefix = L01 | ATC_suffix = BA01 | ATC_supplemental =
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