ttps:www.alldaychemist.com618-duolin-.htmlbr br Duolin is generic alternative to Combivent.br Duolin Inhaler (Ipratropium BromideLevosalbutamol) is used to treat chronic obstructive pulmonary disease. This drug has sometimes been given to patients suffering from asthma. It contains two active ingredients, salbutamol and ipratropium bromide.br br Ipratropium works by helping to block the muscarinic receptors. These receptors are responsible for causing the airways to narrow. Salbutamol helps the muscles in the airways to relax, which in turn widens the airways. These two ingredients may ease breathing in conditions where the airways have tightened, such as chronic bronchitis.br br AllDayChemist.com is a professionally managed generic drugs distributor, supplying generic drugs and formulations to patients around the world. We offer great-value generics, without ever compromising on quality.