Imitrex is a prescription medication used to treat migraine headaches once they have started. Imitrex belongs to a group of drugs called serotonin receptor agonists or "triptans", which relieve pain by narrowing blood vessels around the brain.
This medication comes in tablet and nasal spray and is taken at the first sign of a migraine headache.
Imitrex is also available as an injectable form to be injected under the skin. Imitrex injection is also used to treat cluster headaches in adults.
Common side effects of Imitrex include tingling or numbness in fingers or toes...