👉 Arecolin is a drug used to treat and prevent coughs, as well as related symptoms such as wheezing or shortness of breath. It is a type of beta-agonist bronchodilator medication, which means it works by relaxing muscles in the lungs that make air flow more easily. Arecolin is commonly prescribed for people who have chronic obstructive pulmonary disease (COPD) and other conditions that cause frequent coughing or wheezing.