The most common side effects observed in adult patients include vision problems, fever, nausea, rash, vomiting, chills, headache, abnormal liver function tests, rapid heart rate, and hallucinations. The most common side effects observed in pediatric patients include vision problems, fever, vomiting, nosebleeds, nausea, rash, stomach pain, diarrhea, high blood pressure, low potassium levels in the blood, cough, headache, low platelet levels, abnormal ALT, low blood pressure, peripheral edema, high blood glucose levels, rapid heart rate, shortness of breath, low calcium levels in the blood, low phosphorus levels in the blood, abnormal LFT, mucosal inflammation, eye discomfort in the presence of bright lights, abdominal distention, constipation, dizziness, hallucinations, coughing up blood, low albumin levels, low magnesium levels in the blood, kidney problems, and upper respiratory tract infection. If you experience side effects that concern you or will not go away, let your doctor know right away.