<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have been having joint pain and swelling after a recent bowel infection. My doctor said it could be reactive arthritis. What medications do I need to take?  <response>: For reactive arthritis, the required medications are Methotrexate, Sulfasalazine, Dexamethasone Topical Product, Folic Acid, and Methylprednisolone Medrol. However, Air, Mecamylamine, Troleandomycin, Indium Oxyquinoline In-111 Indium In-111 Oxyquinoline, and Pipecuronium Arduan are not used for this condition. 