Question: what is the best over the counter medicine to get rid of a cough?
Answer: Cough suppressants, like dextromethorphan, can provide relief for a short time. They work on the part of your brain that controls the process.
Expectorants, like guaifenesin, can break up congestion in your chest by thinning the mucus in your airways. This way, when you do cough, you can get rid of phlegm more easily.