Methotrax 15 Methotrexate Phenylbutazone
MajorPhenylbutazone can make methotrexate (Trexall) more toxic, so the two should not be taken together without a doctor's advice. Phenylbutazone belongs to the NSAID group of pain and inflammation medicines. The leaflet says NSAIDs should not be given before or along with high doses of Trexall, such as the doses used to treat osteosarcoma (a bone cancer). Take them together only if your doctor has told you to.
These medicines can affect each other in a serious way. Do not start taking them together unless your doctor has said it is OK. If you already take both, do not stop either one on your own: speak to your doctor or pharmacist soon.