Sumatriptan overdose
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overdosage topics
Clinical trials
In clinical trials, the highest single doses of Imitrex Nasal Spray administered without significant adverse effects were 40 mg to 12 volunteers and 40 mg to 85 migraine patients, which is twice the highest single recommended dose. In addition, 12 volunteers were administered a total daily dose of 60 mg (20 mg 3 times daily) for 3.5 days without significant adverse events. Return to top
Animal data
Overdose in animals has been fatal and has been heralded by convulsions, tremor, paralysis, inactivity, ptosis, erythema of the extremities, abnormal respiration, cyanosis, ataxia, mydriasis, salivation, and lacrimation. The elimination half-life of sumatriptan is about 2 hours, and therefore monitoring of patients after overdose with Imitrex Nasal Spray should continue for at least 10 hours or while symptoms or signs persist. It is unknown what effect hemodialysis or peritoneal dialysis has on the serum concentrations of sumatriptan. Return to top
Adapted from the FDA Package Insert.