Ventolin 100mcg MDI (Salbutamol) is a prescription inhaler used for the quick relief of asthma symptoms such as wheezing and shortness of breath. Due to the need for proper diagnosis, dosage, and inhalation technique, Ventolin MDI requires a valid doctor's prescription. Consult your physician to determine if Ventolin is the appropriate medication for your asthma. Proper use is crucial for effective relief.