Anorexia, nausea & vomiting, diarrhoea, epigastric distress, esophageal ulcers, anogenital inflammatory lesions, rash, photosensitivity, dermal & mucosal blue-gray pigmentation, exacerbation of SLE & serum sickness-like reactions, severe headache, visual impairment & papilloedema, dizziness, vertigo, blood dyscrasias. Hypersensitivity.