Hypotension, pericarditis, angioneurotic oedema, dyspnoea, serum sickness, peripheral oedema, tachycardia, urticaria, haemolytic anaemia, thrombocytopenia, neutropenia, porphyria, eosinophilia, brown-black microscopic discolouration of thyroid tissue, headache, bulging fontanelles in infants and benign intracranial HTN in adults, blurring of vision, scotomata, diplopia, tinnitus, abdominal pain, stomatitis, anorexia, nausea, vomiting, diarrhoea, dyspepsia, oesophageal ulceration, discolouration of teeth, enamel hypoplasia, transient increases in LFT and BUN, jaundice, pancreatitis, rashes, exfoliative dermatitis, photo-onycholysis, photosensitivity, arthralgia, myalgia, vaginitis.
Potentially Fatal: Anaphylactoid reactions, Stevens-Johnson syndrome, toxic epidermal necrolysis, Clostridium difficile-associated disease (CDAD), hepatotoxicity.