Dextromethorphan (Delsym, Robitussin ... is a generic over-the-counter drug used in adults and certain children to treat cough caused by irritation to your throat and airways, such as from ...

It is about equal to codeine in depressing the cough reflex. In therapeutic dosage ... use lowest effective dose. Atopic children. Compromised respiratory function (eg, COPD, apnea), signs ...