DrugDigest: Sumatriptan ( Imitrex ): Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available.
Imitrex: Product information from Glaxo Wellcome, in Portable Document Format (PDF). (sumatriptan succinate)
Imitrex: Product information for US residents in PDF format. [Acrobat Reader required]
Sumatriptan: Information from the RxList.