Dextromethorphan Hydrobromide Guaifenesin (Mucotuss) 10mg/50mg/5ml Syrup 60ml is a combination syrup designed to relieve cough and chest congestion. Dextromethorphan acts as a cough suppressant, while Guaifenesin helps to loosen mucus in the chest for easier expectoration. This syrup provides effective relief for both dry and productive coughs, and comes in a 60ml bottle for convenient use.