Ventolin asthma inhaler is typically used to relieve asthma attacks or when the patient is experiencing difficulty in breathing. It contains the active ingredient Salbutamol which is fast-acting and is effective for treating symptoms of the respiratory condition asthma and other similar chronic conditions such as COPD (Chronic Obstructive Pulmonary Disease). When inhaled, the drug relaxes the airways of the lungs which allows the person to breathe easier thus alleviating an acute asthmatic episode.