Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take it with or without food. Take your medicine at regular intervals. Do not take your medicine more often than directed. Do not stop taking except on your doctor's advice. A special MedGuide will be given to you by the pharmacist with each prescription and refill. Be sure to read this information carefully each time. Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.
Side effects that you should report to your doctor or health care professional as soon as possible:
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- breathing problems
- confusion
- changes in vision
- dark urine
- feeling faint or lightheaded, falls
- fever or chills, cough, sore throat
- high blood pressure
- jaw pain, especially after dental work
- mouth sores
- redness, blistering, peeling, or loosening of the skin, including inside the mouth
- seizures
- stomach pain
- swelling of feet, legs
- trouble passing urine or change in the amount of urine
- unusual bleeding or bruising
- unusually weak or tired Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
- bone or muscle pain
- change in hair color (lighter)
- changes in taste
- diarrhea
- loss of appetite
- nausea, vomiting
- skin that is cracked, dry, thick, yellow or lightened
- stomach upset
Do not take this medicine with any of the following medications:
- cisapride
- dronedarone
- fluconazole
- pimozide
- posaconazole
- saquinavir
- thioridazine This medicine may also interact with the following medications:
- certain antivirals for HIV or hepatitis
- certain antibiotics like clarithromycin, rifabutin, rifapentine, rifampin, and telithromycin
- certain medicines for fungal infections like ketoconazole, itraconazole, or voriconazole
- certain medicines for irregular heart beat like amiodarone, encainide, flecainide, propafenone, quinidine
- certain medicines for seizures like carbamazepine, phenobarbital, phenytoin
- dexamethasone
- dofetilide
- grapefruit juice
- nefazodone
- other medicines that prolong the QT interval (cause an abnormal heart rhythm)
- St. John's Wort