Anemia; arrhythmia, ventricular arrhythmia, bradycardia, AV block, cardiac arrest & disorder, MI, extrasystoles, atrial fibrillation, tachycardia, supraventricular & ventricular tachycardia; photopsia, visual impairment; abdominal pain, diarrhea, nausea, vomiting; chills, hyperpyrexia, pain, pyrexia, thirst; abnormal hepatic function, hyperbilirubinemia; increased γ-glutamyl transferase, ALT & AST, blood alkaline phosphatase, blood urea, ECG T wave inversion, prolonged ECG QT; acidosis, hyperkalemia, hypoglycemia, hypovolemia, hypernatremia; convulsion, dizziness, headache, neuralgia, neuritis, speech disorder; agitation, confusional state, delirium, hallucination, illusion; oliguria, polyuria; apnea, bronchospasm, dyspnea, hypercapnia, hypoventilation, hypoxia, pulmonary congestion, resp acidosis; hyperhidrosis, pruritus, rash, urticaria; light anesth; hemorrhage, BP fluctuation, HTN, hypotension.