Robitussin Elderberry Cough and Chest Congestion DM Children's Cough Medicine is a cough syrup that is made with real elderberries for flavor. This non drowsy cough medicine utilizes the expectorant guaifenesin, as well as the cough suppressant dextromethorphan, to deliver effective cough and chest congestion relief. This cough medicine and expectorant is easy to administer for convenient relief of symptoms. As soon as you notice your child experiencing that tickle of a cough and build-up of mucus, pour the age-appropriate dose and let the formula do the rest. Give this cough and chest congestion medicine every four hours while symptoms persist. This liquid expectorant battles coughs. Delivering cough relief for more than 70 years, Robitussin has the product you need to treat your child's specific cough symptoms for day and night relief.