A good sucking candy can be used to treat a cough effectively. When you suck on the candies, your mouth releases saliva. When the saliva is swallowed, it lubricates your throat on its way to the stomach. The lubrication effectively stops a dry cough in its tracks. Peppermint candy seems to work the best as a cough suppressant. The natural menthol in the peppermint soothes and decongests you as it is released and helps get rid of that cough even more.