need to know information on and history ## If you're talking about Pulmari GP which contains Carbetapentane + Guaifenesin, then that medicine is used to decrease coughs and break up mucus in the lungs caused by colds or throat irritation. Carbetapentane helps to stop cough. Guaifenesin helps break up mucus in the lungs. This product is not intended to treat chronic cough caused by smoking, asthma, emphysema, heart failure, or problems in which there is a large amount of mucus.