Ulcers, GI bleeding & perforation, post-op haemorrhage, acute renal failure, anaphylactic & anaphylactoid reactions, liver failure. Edema; HTN; pruritus, rash; nausea, dyspepsia, GI pain & fullness, diarrhea, constipation, flatulence, vomiting, stomatitis; purpura; cephalgia, drowsiness, dizziness, sweating; pain in inj site.