Precautions

It is very important that your doctor check your or your child's progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.

Check with your doctor right away if you have burning, tingling, numbness or pain in the hands, arms, feet, or legs, headache, lightheadedness, confusion, memory problems, sleepiness or unusual drowsiness, change or loss of taste, hearing loss, or unusual tiredness or weakness. These maybe symptoms of more serious problems.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.