Imigran is primarily used to treat acute migraines. This medication is part of a group of medications known as triptans, which work to relieve migraines by narrowing the blood vessels around the brain and reducing the levels of substances that cause pain, nausea, and sensitivity to light or sound during a migraine attack.
Imigran may be used to treat some cases of cluster headaches according to the doctor's instructions. However, this medication is not considered a preventative, meaning that it is not used to reduce the frequency of headache attacks, but is only taken when they occur to relieve symptoms.