Habitrol Lozenges contain nicotine this nicotine is stored in the form of nicotine bitartrate dehydrate. Habitrol Lozenges also contains maltitol, sodium carbonate, sodium bicarbonate, polyacrylate, dispersion, xanthan gum, colloidal anhydrous silica, levomenthol, peppermint oil, aspartame and magnesium stearate.Each lozenge also contains 0.88g maltitol (equivalent to 22g/maximum dose of 25 of the 1mg lozenge or quivalent to 13.2g.maxumum dose of 15 of the 2mg lozenges).The sodium content should be taken into account by those on a low sodium diet. Aspartame is a source of phenylalanine which may be harmful for people with phenyiketonuria. Product containing maltitol may have a laxative effect or cause diarrhoea.Do Not use Habitrol Lozengers if:Your mouth or throat is sore. You are pregnant or breastfeeding. You are under 18 years old. You are a non-smoker. You are hypersensitive to nicotine or any or the ingredients in the lozenges. You have had a recent heart attack or stroke. You have angina (chest pain) that is not well controlled or is getting worse. You have severe arrhythmia (irregular heart beat).