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What is an Imitrex injection?

An Imitrex injection is the injectable form of Imitrex. It contains the active ingredient sumatriptan which is used to treat migraine headache and cluster headache symptoms. It is absorbed very quickly when injected under the skin. Imitrex is in a class of medications called 5-HT agonists, or triptans. These work to constrict or narrow the blood vessels around the brain. Although the exact cause of migraines is not known, triptans like Imitrex have been shown to be an effective way to alleviate the migraine and cluster pain. Imitrex cannot be used to prevent a migraine or cluster, it can only treat symptoms after the headache starts. Imitrex can also be used to treat cluster headache systems. Cluster headaches are the most painful type of headache. They occur in cluster episodes can last over several weeks or months, and then go into remission for months or years.

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