Anaphylaxis, insomnia, dizziness, coughing, abdominal or chest pain, diarrhea, hallucinations, ageusia, anosmia, aseptic meningitis, vasculitis, GI hemorrhage, hepatitis, liver & acute renal failure, interstitial nephritis, hyponatremia, pruritus, rash, peripheral edema, serious skin reactions (exfoliative dermatitis, Stevens-Johnson syndrome & toxic epidermal necrolysis & drug rash w/ eosinophilia & systemic symptoms); pulmonary embolism.