People who are taking ketoprofen should avoid taking any other medications, including over-the-counter pain, cold or allergy medicines, vitamins or herbal products, without consulting with a physician. Tell your doctor if you are taking a blood thinner like warfarin or a steroid, such as cortisone, hydrocortisone, dexamethasone, methylprednisolone, prednisone, prednisolone or Orapred. Your physician should also be consulted before taking lithium (Eskalith, Lithobid), probenecid (Probalan), methotrexate (Trexall) or a diuretic, like hydrochlorothiazide (HCTZ), furosemide, torsemide, Demadex or Lasix. NSAIDs or nonsteroidal anti-inflammatory drugs (i.e. aspirin, ibuprofen and naproxen) should be avoided unless prescribed by a physician. Alcohol should also be avoided while taking ketoprofen, as it can cause stomach bleeding.