No, although both copyright DM Syrup and Robitussin DM Cough Formula are used as chest suppressants, they don't exactly the same medications. Robitussin DM includes just DM and guaifenesin mucus thinner, https://andrewpper533725.activosblog.com/40733246/is-copyright-dm-syrup-identical-to-robitussin-dm-cough-formula