Imitrex is used to treat migraine headache attacks once they occur. Imitrex is not effective in preventing migraines. Imitrex is not to be used for other types of headaches.

Directions
One dose of Imitrex is taken by mouth at the first signs of a migraine attack. If you must take a second dose, do so exactly as instructed by your doctor. Do not take more than 200mg of Imitrex in a 24 hour period. Imitrex tablets are to be swallowed whole with a glass of water. Do not crush or chew them.

Drug Interactions with Imitrex
Tell your doctor of all over-the-counter and prescription medication you take, especially of: ergotamine containing medication, all headache drugs, MAO inhibitors (e.g., furazolidone, linezolid, phenelzine, selegiline, tranylcypromine). Do not take MAO inhibitors with Imitrex(sumatriptan) or use Imitrex(sumatriptan) within 2 weeks of stopping use of MAO inhibitors. Do not take any ergotamine-containing medication and Imitrex(sumatriptan) within 24 hours of each other. Also, report the use of all antidepressants or any medications used for weight control. If you are unsure about the types of medications you take, ask your care provider or pharmacist. It is recommended to avoid consumption of alcohol while taking Imitrex. Do not start or stop any medicine without doctor or pharmacist approval.