Tofacitib Tablet is not a hormone drug, it is a kind of JAK kinase inhibitor, which belongs to a kind of immunosuppressant and has the function of regulating cellular immunity. 1. Ingredients: The main ingredient of Tofacitib Tablets is Tofacitib Citrate. 2. Indications: It is commonly used in the treatment of active moderate to severe rheumatoid arthritis with insufficient efficacy of methotrexate. It can also be used in combination with methotrexate. 3. Adverse reactions: In patients with rheumatoid arthritis treated with Tofacitib, serious infections may occur, such as pneumonia, herpes zoster, urinary tract infections, appendicitis, mycobacterial infections, cryptococcosis, esophageal candida infections, etc.; induced malignant tumors; laboratory test abnormalities, such as neutropenia, liver enzyme elevation. 4. Contraindications and precautions: allergic to the product is prohibited, there are no other contraindications. Pregnant women, lactating women, the elderly, children need to be used with caution under medical supervision. Avoid patients taking the product on their own or using it in combination with biological agents and other strong immunosuppressants to avoid the risk of medication. The drug needs to be used under the supervision of a doctor to avoid self-administration and adverse effects.