Many patients with epilepsy blindly increase the dose of medication after a bleeding seizure, believing that the more types of medication and the higher the dose, the more effective it must be. This is not the case. The use of antiepileptic drugs in clinical practice begins with a single drug and a small dose. The following are some of the advantages of a single drug: 1. 2. To avoid the interaction between drugs in combination, which may reduce the efficacy or increase the toxicity. 3, to avoid increased seizures, such as phenytoin sodium poisoning with frequent seizures, or even the emergence of continuous status epilepticus. 4, because there are not many effective drugs that can be applied clinically for the treatment of epilepsy, pay attention to the combination of more than two drug treatments, so that the choice of later is greatly reduced. The single medication can reduce the economic burden of the patient. The second drug can be added only after some factors (such as insufficient dose, wrong drug selection, irregular medication, etc.) have been ruled out and monotherapy has been confirmed to have failed. As for the dose of single medication, it should start from a small dose, and the dose of oral medication should start from a small dose, and the dose of oral medication should be taken until the seizure is completely controlled, and the most appropriate concentration should be obtained by testing the concentration of the medication and avoiding the secondary symptoms caused by too high concentration. Once the dose is diagnosed, the medication must be administered regularly to ensure stability.