There have been some reports of overdosage with sumatriptan succinate. Doses up to 400 mg orally were not associated with side effects other than those mentioned.
If overdosage with sumatriptan occurs, the patient should be monitored and standard supportive treatment applied as required. Toxicokinetic data are not available.
The effect of hemodialysis or peritoneal dialysis on the serum concentration of sumatriptan is unknown.