The starting dose of Tegretol to treat epilepsy in adults and children over 12 years of age is 200 mg twice daily for tablets and XR tablets, or 1 tsp 4 times daily for suspension (400 mg/day). Usual maintenance dose is 800-1200 mg daily. The starting dose to treat trigeminal neuralgia is 100 mg twice daily for tablets or XR tablets, or � tsp 4 times daily for suspension, for a total daily dose of 200 mg. Control of pain is maintained in most patients with 400-800 mg daily. Consult your doctor for pediatric doses. Many other medicines interact with Tegretol. Tell your doctor all prescription and over-the-counter medications and supplements you use, especially theophylline, birth control pills or hormone replacement therapy, antibiotics, drugs to treat tuberculosis , antifungal medications, blood thinners, cancer medicines, heart or blood pressure medications, HIV or AIDS medications, medications to treat depression or mental illness , medicines to prevent organ transplant rejection, other seizure medications , steroids, or thyroid replacement medications. During pregnancy , Tegretol should be used only when prescribed. It may harm a fetus. Since untreated seizures are a serious condition that can harm a pregnant woman and her baby, do not stop taking this medication unless directed by your doctor. If you are pregnant, prenatal care including tests for defects is recommended. Hormonal birth control may not work if taken with this medication. Discuss birth control with your doctor. This medication passes into breast milk. Consult your doctor before breast-feeding.