Primidone is primarily used in the treatment of epilepsy, particularly for controlling seizures. It is effective in managing partial and generalized tonic-clonic seizures. The medication works by stabilizing electrical activity in the brain, reducing the likelihood of abnormal impulses that lead to seizures. It is often prescribed when other antiepileptic drugs are not suitable or effective. Additionally, primidone is sometimes used to treat essential tremor, a condition characterized by involuntary shaking, especially in the hands. Its ability to calm overactive nerve signals makes it a valuable option for improving motor control in such cases. Patients typically start with a low dose, which is gradually increased to minimize side effects while achieving optimal therapeutic benefits. Regular monitoring is essential to ensure safety and effectiveness during treatment.