Cough suppressants are medications designed to reduce the urge to cough. They work by acting on the brain's cough center, helping to alleviate persistent coughing often caused by colds, flu, or other respiratory conditions. Common active ingredients in these medications include dextromethorphan and codeine. These medications are available in various forms, such as syrups, tablets, and lozenges. While cough suppressants can provide relief, they are generally recommended for dry coughs rather than productive coughs, which help clear mucus from the airways. Always consult a healthcare professional before using cough suppressants, especially for children.