Tegretol CR 400mg is a prescription medication manufactured by Novartis containing carbamazepine as the active ingredient. Each pack contains 30 divitabs in a controlled-release formulation designed to provide consistent therapeutic effects throughout the day. The CR (Controlled Release) formulation helps maintain steady levels of the medication in the body through specially formulated divitabs that gradually release the medicine over time. Each tablet contains 400mg of carbamazepine. This is a prescription-only medication that should be taken only under medical supervision according to prescribed dosage.