Absorption.: Medications are absorbed from the mouth and gut. Most enter the blood stream and act. That's why you take antibiotics by mouth when you have a bladder infection instead of putting them in the bladder. Most cough suppressants are not appropriate for acute cough. An inhaler to relax the bronchioles, or fight inflammation in your lungs is, sometimes. OTC cough, and cold meds are worthless.
Answered 10/14/2015
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