Sumatran Relief contains: The active substance is sumatriptan. Each tablet contains 50mg sumatriptan (as sumatriptan succinate). Other ingredients are: Ammonium methacrylate copolymer type A, carmellose sodium (E466), microcrystalline cellulose(E450), croscarmellose sodium (E468), lactose monohydrate, magnesium sterate (E470b), flavouring (grape), red iron oxide (E172), yellow iron oxide (E172)