The active substance is nicotine. Each lozenge contains 4 mg nicotine (as nicotine resinate).
The other ingredients are - lozenge core: mannitol (E421), xanthan
gum, Tutti Frutti Flavour (contains traces of sulphites), gum arabic (E414), sodium carbonate, anhydrous (E500)(i), sucralose (E955), acesulfame potassium (E950), magnesium stearate (E470b) - coating: hypromellose (E464), Tutti Frutti Flavour, titanium dioxide (E171), sucralose (E955), microcrystalline cellulose (E460), potassium aluminium silicate (E555), acesulfame potassium (E950), polysorbate 80 (E433).