Antiepileptic drugs are therapies approved to treat patients with epilepsy, a brain disorder in which clusters of nerve cells signal abnormally, which can lead to seizures. These seizures are incidents that occur when group of nerve cells or neurons in brain sends wrong signals. Patients suffering from epilepsy may complain about strange emotions and sensations or they may behave strangely. Epilepsy is the fourth most common brain disorder affecting people of all ages. The causes of epilepsy are undetermined however major risk factors involved include brain injury, brain tumor, stroke, and substance use disorders. For the treatment of epilepsy, antiepileptic medicines (AEDs) are prescribed, preference of the drug depending on the age of the patient, type of seizures to be treated, seriousness of the seizures, and part of the brain involved. Alcoholism, smoking, changing lifestyle and rising geriatric population are the major factor driving the antiepileptic market.