Which medication is commonly prescribed for a patient newly diagnosed with Rheumatoid Arthritis?

Methotrexate is commonly prescribed for patients newly diagnosed with Rheumatoid Arthritis because it is a disease-modifying antirheumatic drug (DMARD) that helps to slow the progression of the disease and prevent joint damage. Methotrexate works by inhibiting the metabolism of folate, which is crucial for the proliferation of rapidly dividing cells, including inflammatory cells involved in autoimmune processes. By reducing inflammation and autoimmunity, methotrexate improves symptoms and overall functioning for individuals with Rheumatoid Arthritis.

In contrast, calcitonin is primarily used to treat osteoporosis and certain conditions like Paget's disease, making it less relevant for Rheumatoid Arthritis. Ibuprofen, while it can provide symptomatic relief from pain and inflammation, does not modify the disease progression and is typically used for short-term management of pain rather than long-term treatment. Glucosamine is often used as a dietary supplement for osteoarthritis to help with joint health but lacks strong evidence in treating Rheumatoid Arthritis specifically and does not have the same impact on disease progression.