Each tablet contains either: • 100 micrograms fentanyl (as citrate) • 200 micrograms fentanyl (as citrate) • 400 micrograms fentanyl (as citrate) • 600 micrograms fentanyl (as citrate) • 800 micrograms fentanyl (as citrate) The other ingredients are mannitol, sodium starch glycolate type A, sodium hydrogen carbonate, sodium carbonate anhydrous, citric acid anhydrous, magnesium stearate.