How Does Imitrex Work to Treat Migraine Headaches?
Imitrex is part of a class of medications called 5-HT agonists (or more commonly known as "
triptans"). During a
migraine headache, some of the blood vessels in the head can become dilated (wider than they usually are). Imitrex works by narrowing these blood vessels, helping them return to their normal state. This action helps to relieve
migraine symptoms.
Imitrex should be taken as soon as possible once a
migraine starts. If your
headache comes back or does not go away, you may take a second dose of Imitrex after waiting at least two hours from the time you took the first dose of Imitrex tablets or Imitrex nasal spray (or one hour after the first dose of an Imitrex injection). Let your healthcare provider know if Imitrex does not work completely after one dose.
Effects of Imitrex on Migraine Pain
In one study, 52 to 62 percent of people with
migraines had no (or mild) pain within two hours of taking Imitrex tablets, compared to only 27 percent who did not take Imitrex. Within four hours, as many as 79 percent of people who had taken the drug had
migraine relief, compared to just 38 percent of people not taking Imitrex. Similar results were seen in studies of Imitrex nasal spray and Imitrex injection.
Imitrex is a prescription medicine used for treating migraines. It does not prevent migraines from occurring (
see Migraine Prevention). Although the drug is quite effective in treating migraine
headaches, it is not right for everyone (
see Imitrex Warnings and Precautions). It can also cause side effects in some people, such as tingling, dizziness, and chest discomfort.
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