Dimenhydrinate is an antihistamine drug used to treat motion sickness and vertigo. However, the manufacturing process of dimenhydrinate can result in the presence of impurities, which are unwanted substances that may affect the safety and efficacy of the drug. Impurities in dimenhydrinate may include residual solvents, degradation products, and other impurities that can be harmful if present in significant quantities. Therefore, it is essential to monitor and control the levels of these impurities during