History of allergic conditions. Discontinue use at the 1st appearance of skin rash, mucosal lesions, or any other sign of hypersensitivity. Avoid concomitant use w/ NSAIDs including COX-2 selective inhibitors. W/draw treatment when GI bleeding or ulceration occurs. History of ulcerative colitis or Crohn's disease. Monitor for digestive disturbances especially GI bleeding in patients w/ GI symptoms or history of GI disease. Consider combination therapy w/ protective agents (eg, misoprostol or PPIs) for patients requiring concomitant low dose ASA, or other drugs likely to increase GI risk. Concomitant use w/ medications which could increase risk of ulceration or bleeding eg, oral corticosteroids, anticoagulants (eg, warfarin), SSRIs or antiplatelet agents (eg, ASA); other coumarins or heparins. History of HTN &/or mild to moderate CHF. Risk of arterial thrombotic events particularly at high doses & in long term treatment. Patients w/ uncontrolled HTN, CHF, established ischaemic heart disease, peripheral arterial disease, &/or cerebrovascular disease; risk factors for CV disease (eg, HTN, hyperlipidaemia, DM, smoking). Increased risk of nephrotoxicity in patients receiving diuretic therapy or those who could develop hypovolaemia. Alcoholism. May affect ability to drive & use machines. Renal or hepatic impairment. May impair female fertility & is not recommended in women attempting to conceive. Pregnancy (2nd trimester). Elderly. Childn & adolescents.