No, even though both copyright DM Syrup and Robitussin DM are used as respiratory suppressants, they aren't exactly the same medications. Robitussin-DM contains just dextromethorphan and guaifenesin mucus https://diegospgt387666.azzablog.com/42384722/is-copyright-dm-syrup-identical-to-robitussin-dm-cough-formula