Tegretol-XR (TEG-reh-tall eks-arr) is a brand name used in the United States for one form of the seizure medicine called carbamazepine (CAR-buh-MAZ-uh-peen). The “XR” stands for “extended release."
The best-known brand name for carbamazepine in the United States and many other countries is Tegretol. Most people need to take regular Tegretol three or four times a day, however. Many have trouble remembering to take it so often. "Extended-release" pills release the medicine slowly, so they can be taken just twice a day. Carbatrol is another extended-release form of carbamazepine. It works in a different way.
In other countries, different extended-release forms of carbamazepine may be available. In the UK, for instance, Tegretol Retard is often used. It uses a different method than Tegretol-XR to deliver the medicine to the body over a long period. Unlike Tegretol-XR, Tegretol Retard tablets can be divided, but they should not be chewed or crushed.