how does guaifenesin work in the body
Mucinex A: Mucinex (guaifenesin) is an over-the-counter product which is used to relieve chest congestion. Guaifenesin works by loosening the phlegm in the chest so that it can be expelled easier. Generally speaking, drug interactions fall into three main categories: Drug-drug (i.e., prescription, over-the-counter, herbals, dietary supplements) interactions occur when two or more drugs react with each other.