Cough and Chest Congestion DN, Cough DM Daytime, Nighttime

This over-the-counter kit contains dextromethorphan (a cough suppressant), doxylamine (a sleep aid), and guaifenesin (an expectorant) to help relieve cough and chest congestion symptoms, with separate daytime and nighttime formulations. The daytime formula is designed to suppress cough and thin mucus without causing drowsiness, while the nighttime formula includes a sleep aid to help you rest while managing your symptoms.