Epilepsy is a chronic cerebral disease which always incites medical researchers to invent its treatment in order to develop efficient drugs with low doses and very few side effects. In the first part of our research, we classified the different semiological characteristics of epileptic and antiepileptic seizures, and in the second part, we compared the recommended minimum theoretical dosage of antiepileptic drugs and the practical reality. The study was carried out on 68 epileptic consultants selected from the neurologist's practice patients (Dr. Sedairia). The selection was made on the basis of different parameters: sex, type and frequency of seizures, age at first seizure, current age, results of complementary examinations: EEG, MRI, CT as well as therapeutic management. The results show that the drug dose can be influenced by various factors, among them pharmacogenetics and the role of the blood-brain barrier, but the theoretical doses indicated are very high compared to the practical reality, and it could be said that if the indicated doses were to be followed, all patients would be overdosed with adverse side effects; so if a low dose of an anti-epileptic drug can balance a patient's epilepsy, they do not have to use higher doses just because the levels are low.