It is not the oxygen that is flammable, it is the substance that burns. The more oxygen, the easier and faster to burn. Views Â· View Upvotes.
Dextromethorphan (DXM or DM) is an antitussive (cough suppressant) drug of the morphinan class with sedative and dissociative properties.
Profile. Dextromethorphan (DXM) is a synthetic substance most commonly found in a variety of over-the-counter (OTC) medicines as an antitussive (cough suppressant) and expectorant (an agent that promotes the removal of mucus from the respiratory tract).ther medical uses of DXM include the temporary relief of sinus congestion, runny nose, cough, sneezing, itching of the nose and throat, and watery eyes caused by hay fever, allergies, cold, or flu (influenza).