Bronchitis
"I have COPD and have been using guaifenesin for several years. It works wonders and for coughs, I think the liquid soothes your throat better. BUT IT IS IMPORTANT NOT to get the &quot;DM&quot; or any version of it with dextromethorphan in it. Those of you having dream disturbances or nervous reactions are surely using this.  You want to buy the plain &quot;TUSSIN&quot; that is only an expectorant and nothing else. Also drink plenty of fluids to help liquidize the mucus. I will swear by this stuff, but you have to read the labels and be careful what you buy. "