It is an early and intermittent treatment for migraine attacks (limited to quick disintegration tablets). The drug should not be administered as a routine prophylactic therapy. It is effective to take it as early as possible in a migraine attack, but the time taken for the drug is equivalent to taking it even during a migraine attack. 1. Adults : Administered orally sumatriptan 50 mg once. Some may require sumartiptan 100mg. If symptoms reappear after the first dose response, they can be administered again, but the interval of administration should be at least two hours and should not exceed 300 mg for 24 hours. Patients who do not respond to the prescribed dose should not be administered again for the same attack. When treating migraine, it is desirable to administer this medicine alone without being combined with other migraine treatments. If a single dose of the drug does not respond, it is not necessary to restrict the administration of aspirin, nonsteroidal anti-inflammatory drugs, acetaminophen, etc. Swallow whole with water. 2. Children and adolescents: The safety and efficacy of the drug in children under the age of 18 have not been established. 3. Elderly : Patients over 65 years of age have little experience with the drug. Although the pharmacokinetics in these patients do not differ significantly from those of the younger age group, The drug is not recommended for patients over 65 years of age until more clinical tests are available. 4. Patients with liver disease : The drug should be taken 50 mg once