Asthma is a condition which has no single cause it can be caused by different factors like, Genetics, Allergens, Air pollution, Respiratory infections, Lifestyle factors. Inhaler therapy is a crucial part of Asthma treatment, inhaler therapy refers to delivering directly medicines to lungs. An inhaler for asthma is a device used to deliver treatment directly to the lungs. The inhaler is filled with different medications that play the role of relaxing the muscles around the air passages