Bronchostop, our first treatment to relieve any cough. Not sure what cough type you have or does it changes from dry to chesty or back? Bronchostop contains a distinct combination of ingredients to help relieve any cough: dry, tickly, chesty, mucus, catarrh based on traditional use. Buttercup Bronchostop cough syrup. A traditional herbal medicinal product used for the relief of coughs, such as chesty coughs and dry, tickly, irritating coughs and catarrh, particularly based upon long-standing use as a traditional remedy. Always read the leaflet. Bronchostop is available in a sugar-free syrup for at home and easy, on-the-go pastilles, all non-drowsy and alcohol-free.