OTC inhaler are non-prescription drugs that provide immediate relief from minor asthma symptoms such wheezing, coughing, and shortness of breath. These inhalers usually contain bronchodilators such as epinephrine or ephedrine, which help to open up the airways and enhance breathing. OTC inhalers can be useful for individuals with occasional symptoms or those who may not have immediate access to a prescription inhaler. However, they do not replace long-term asthma therapy or professional medical care. Regular or frequent use may indicate uncontrolled asthma and should prompt a consultation with a healthcare provider.