Blister packs are commonly used as unit-dose packaging for pharmaceutical tablets, capsules or lozenges. It is added to cough syrups, teas, lozenges, and gargles. Several brands of throat lozenges contain dextromethorphan. Smoking cessation products, such as nicotine-replacement gum, lozenges, and patches were still allowed. Zinc gluconate has been used in lozenges for treating the common cold. Types of NRT include the adhesive patch, chewing gum, lozenges, nose spray, and inhaler. Systemic fluoride is found as lozenges, tablets, drops and water fluoridation. It can be found in various products which include chewing gums and lozenges. Strategies to increase this residence time include bioadhesive polymers, gums, lozenges and dry powders. Efficacy increases 15% to 36% with combining treatments such as gum and lozenges. Pholcodine is found in certain cough lozenges. Zinc acetate has been used in lozenges for treating the common cold. Pectin is also used in throat lozenges as a demulcent. Victory V is a British brand of liquorice-flavoured lozenges. It is also available as throat lozenges, and was formerly available as a cream.