Why would I take cough syrup with an expectorant and a suppressant?

Jill A. Grimes, MD
Family Medicine
Ever wonder why some cough syrups have an expectorant (guaifenisen) and a cough suppressant? Do you want to loosen it up and cough it out, or stop the cough? Well, actually, a combination of expectorant and cough suppressant is not bad. It stops the annoying little throat tickle type cough, but allows you to cough effectively to clear your lungs.

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