Mucinex

Guaifenesin (say it with us: gwai-feh-nuh-sn) is the effective ingredient that makes Mucinex. Unlike cough suppressants, which mainly help reduce the urge to cough but not necessarily get rid of mucus, Guaifenesin is an expectorant. It thins and loosens mucus so you can naturally expel it when you cough, clearing up your chest and airways.