Drug information provided by: IBM Micromedex

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.

You should not take this medicine together with St John's wort.

This medicine may cause allergic reactions, which can be life-threatening and requires immediate medical attention. Tell your doctor right away if you have a rash or itching skin, chest pain, fever or chills, mild swelling of the face, trouble breathing, or unusual tiredness or weakness while using this medicine.

Do not change your dose or stop taking this medicine without checking first with your doctor.

Before you have any medical tests, tell the medical doctor in charge that you are taking this medicine. The results of some tests may be affected by this medicine.

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.