Imitrex is used to treat Migraine. The generic version is called Sumatriptan succinate. The average Imitrex cash price is about $197.85 for a supply of Solution 6 MG/0.5ML 1 Vial. You can reduce your Imitrex cost by up to 75% with our free Imitrex discount card. Bring it to a participating pharmacy near you to save on your prescription medication.