Buttercup Bronchostop Cough Syrup If you don't know what type of cough you have, or are fed up of different bottles clogging up your cupboard then Buttercup Bronchostop Cough Syrup could be the solution for you. It is a traditional herbal medicinal that contains a unique combination of ingredients that relieve any cough: dry, tickly, chesty, mucus & catarrh. Suitable for adults & children from 12 years, Buttercup Bronchostop Cough Syrup is non-drowsy & alcohol free. It is also sugar free, making it suitable for diabetics.