Over the counter inhalers are non-prescription drugs that treat moderate breathing problems caused by asthma, allergies, or exercise-induced bronchospasm. These inhalers often contain chemicals such as epinephrine or racepinephrine, which help to open the airways by relaxing the muscles around them. OTC inhalers can provide immediate, temporary relief for symptoms such as wheezing, coughing, and shortness of breath. However, they do not replace prescription inhalers or long-term asthma care strategies. Overuse or improper use of OTC inhalers might result in side effects such as elevated heart rate, jitteriness, or worsening respiratory problems. Because they do not address the underlying inflammation associated with asthma, it is critical to visit a doctor if symptoms persist or worsen.