About Seroflo Inhaler Seroflo 250 Inhaler is a respiratory treatment, mainly used to deal with and stave off asthma and chronic obstructive pulmonary diseases (COPD) like bronchitis (inflammation of the lining of your bronchial tubes) and emphysema (briefness of breath). Asthma is a continual (long-term) respiratory situation in which airways narrow, swell, and generate additional mucus,...