For 10mg: The active substance is nicorandil. Each tablet contains 10mg of the active substance,nicorandil. The other ingredients are maize starch, croscarmellose sodium, stearic acid (E570) andmannitol (E421). For 20mg: The active substance is nicorandil. Each tablet contains 20mg of the active substance,nicorandil. The other ingredients are maize starch, croscarmellose sodium, stearic acid (E570) andmannitol (E421).