Ingredients Active ingredient: Benzalkonium Chloride Solution 0.067% v/w (equivalent to 0.5 mg benzalkonium chloride per lozenge) Description The lozenges are intended for the relief of sore throats. The route of administration is oral. The recommended dose for all ages, including the elderly & children over 5 years, is one lozenge to be dissolved slowly in the mouth whenever required. Medicines should be kept out of the reach of children.