Despite the existence of effective therapy people still die from asthma. It is pertinent to state that the clinical effect of a drug is not only dependent on the specific action of the drug, but also on the patient’s way of using it. Therefore, compliance is an important factor especially for chronic disorders such as asthma. Indeed, non compliance with asthma therapy is a serious problem. It has been reported that drug side effects, lifestyle, social and economic factors, method of drug delivery and dosing are factors that contribute to poor compliance. The consequences of poor compliance lead to increased morbidity due to increased symptoms and asthma exacerbation.