Nausea, vomiting, abdominal pain, diarrhoea, jaundice, oedema, hypotension, respiratory distress syndrome, sinusitis headache, chest pain, dizziness, asthenia, anxiety, depression, confusion, agitation, hallucinations, paraesthesia, tremor, influenza-like symptoms, hypoglycaemia, haematuria, blood disorders (including anaemia, thrombocytopenia, leucopenia, pancytopenia), acute renal failure, hypokalaemia, visual disturbances (including altered perception, blurred vision, and photophobia), rash, pruritus, photosensitivity, alopecia, cheilitis, injection-site reactions.
Less commonly: dyspepsia, duodenitis, cholecystitis, pancreatitis, hepatitis, constipation, arrhythmias, syncope, raised serum cholesterol, hypersensitivity reactions (including flushing), ataxia, nystagmus, hypoaesthesia, adrenocortical insufficiency, arthritis, blepharitis, optic neuritis, scleritis, glossitis, gingivitis, psoriasis, Stevens-Johnson syndrome.
Rarely: pseudomembranous colitis, taste disturbances (more common with oral suspensions), convulsions, insomnia, tinnitus, hearing disturbances, extrapyramidal effects, hypertonia, hypothyroidism, hyperthyroidism, discoid lupus erythematosus, toxic epidermal necrolysis, pseudoporphyria, retinal haemorrhage, optic atrophy, also reported squamous cell carcinoma of skin (particularly in presence of phototoxicity or in the immunosuppressed).