Salbair Transcaps is used to treat bronchospasm and symptoms of asthma and chronic obstructive pulmonary disease (COPD). Salbair Transcaps helps to relieve symptoms like coughing, wheezing and shortness of breath. Bronchospasm is the tightening of the muscles that line the airways or bronchi in the lungs. Asthma is a breathing problem in which airways narrow, swell and produce extra mucus, leading to difficulty breathing.