Cough suppressants (antitussives) work by blocking the cough reflex in your brain so that you cough less. While searching for the best cough medicine, you will find several over-the-counter (OTC) ...
Cough suppressants stop you from coughing. An example is Delsym (dextromethorphan). Expectorants are intended to make coughing more effective by increasing mucus production in the lungs and airways.