Carbamazepine is an anticonvulsant drug used to treat epilepsy and bipolar disorder. However, it may contain impurities that can affect its safety and effectiveness. These impurities can be formed during the manufacturing process or due to degradation over time. Some of the common impurities include 10,11-Dihydro-10-hydroxy Carbamazepine and 10,11-Dihydro Carbamazepine, which are known to cause adverse effects such as liver damage and allergic reactions. Therefore, it is essential to monitor the levels of impurities in Carbamazepine to ensure its quality and safety.