It's no mystery to doctors that the over-the-counter preparations may not do much for the cough but the guidelines are stating the fact that there are very few well-done scientific studies to support their use. That's not to say that some of these products may not be helpful for some people to some degree, but those studies just aren't out there.  -   Dr. Dicpinigaitis     Quotes
It's no mystery to doctors that the over-the-counter preparations may not do much for the cough but the guidelines are stating the fact that there are very few well-done scientific studies to support their use. That's not to say that some of these products may not be helpful for some people to some degree, but those studies just aren't out there. Dr. Dicpinigaitis
 Doctors