Adverse effects may occur including nausea, vomiting, abdominal pain, loss of appetite, abdominal distension, colitis, bloody stool, hypoglycemia, hyperglycemia, headache, dizziness, somnolence, insomnia, numbness, tremor, restlessness, palpitation, confusion, delirium, depression, seizure, consciousness disturbed, abnormal vision, hearing loss, ageusia, anosmia, hallucination, arthralgia, myalgia, tendinopathy, tendinitis, tendon rupture (Achilles tendon rupture), weakness, exacerbation of myasthenia gravis, rhabdomyolysis, abnormal gait, rash, pruritis, urticaria, bronchospasm, dyspnea, interstitial pneumonia, eosinophilic pneumonia, angioedema, hypotension, hypersensitivity reaction, anaphylactic reaction, photosensitivity, Stevens-Johnson syndrome, toxic epidermal necrolysis (TEN) or Lyell's Syndrome, Erythema multiforme, hypersensitivity vasculitis, increased liver enzymes (ALT, AST), increased bilirubin, increased creatinine, hepatitis, hepatitis fulminant, jaundice, acute renal failure, interstitial nephritis, hematologic effects such as eosinophilia, leukopenia, thrombocytopenia, agranulocytosis, pancytopenia, hemolytic anemia, tiredness, overgrowth of fungi, development of drug-resistant bacteria, allergic pneumonitis, fever, arrhythmia, cardiac arrest, tachycardia, Torsades de pointes, prolonged QT interval, edema, pancreatitis, edema of the face, edema of the tongue.
Others: phlebitis.