The generic name of methotrexate is methotrexate tablets, taking this drug may cause oral cavity or pharyngitis, mouth and lip ulcers, nausea and vomiting, abdominal pain and diarrhea, gastrointestinal bleeding, liver function impairment, bone marrow suppression, hair loss, redness of the skin, itching, or rashes and other adverse reactions. If the drug is applied in large doses, hematuria, proteinuria, azotemia or even uremia can occur, long-term use of the drug can also appear cough, shortness of breath, pneumonia or pulmonary fibrosis and other symptoms, and if the low white blood cell level can also cause infection. Methotrexate tablets are suitable for the treatment of acute leukemia, malignant lymphoma, mycosis fungoides, multiple myelopathy, head and neck cancer, lung cancer, various soft tissue sarcoma, psoriasis, breast cancer, ovarian cancer, cervical cancer, malignant hyperemesis gravidarum, chorionic epithelial carcinoma, testicular cancer and other diseases. When using the drug, you need to pay attention to the fact that the drug, when taken for a long period of time, has the potential risk of causing secondary tumors; the drug, when applied in large doses, can lead to amenorrhea and spermatogenesis or lack thereof; it should be contraindicated in case of high allergy to the drug, extreme systemic exhaustion, concomitant infections, and insufficiency of cardiac, pulmonary, hepatic, and renal functions. The drug needs to be used under the guidance of a doctor, do not use the drug without authorization.