Sumatriptan nasal spray: Single-dose of 10 mg of nasal spray. The maximum dose in a 24 hour period is 30 mg; separate doses by at least one hour or as directed by the physician.Sumatriptan tablets: In controlled clinical trials, single doses of 25, 50, or 100 mg of Sumatriptan tablets were effective for the acute treatment of migraine in adults. There is evidence that doses of 50 and 100 mg may provide a greater effect than 25 mg. There is also evidence that doses of 100 mg do not provide a greater effect than 50 mg. Individuals may vary in response to doses of Sumatriptan tablets. The choice of dose should therefore be made on an individual basis, weighing the possible benefit of a higher dose with the potential for a greater risk of adverse events.If the headache returns or the patient has a partial response to the initial dose, the dose may be repeated after 2 hours, not to exceed a total daily dose of 200 mg. If a headache returns following an initial treatment with Sumatriptan Injection, additional single Sumatriptan Tablets (up to 100 mg/day) may be given with an interval of at least 2 hours between tablet doses. The safety of treating an average of more than 4 headaches in a 30-day period has not been established.Use in children and adolescents: Sumatriptan is not recommended for use in patients younger than 18 years of age.