Lemsip Cough for Mucus Cough & Catarrh 180mlSymptomatic relief of acute chesty coughs and catarrh associated with influenza, colds and mild throat infections. 100mg 2. 5mg 5ml oral solution, Guaifenesin, cetylpyridinium chloride, Max Strength, Dual Relief. Ingredients Each 5 ml Dose contains: Guaifenesin 100 mg and Cetylpyridinium Chloride 2. 5 mg as Active. Also contains Ethanol, Liquid Sorbitol (E420) and Glycerol.