Duolin Inhaler 50 mcg/20 mcg (200 MDI) is a medicine used to treat asthma and respiratory diseases such as COPD (chronic obstructive pulmonary disease). This medicine contains two main ingredients: Ipratropium Bromide (50 mcg) and Levalbuterol (20 mcg). Levalbuterol helps open the airways, making it easier to breathe, and Ipratropium Bromide relaxes the muscles so that the airways can... https://mediquickrx.com/product/duolin-inhaler-50-mcg/