Common brand names include Mucinex and Robitussin. Guaifenesin comes in pill, tablet, granular, and liquid forms. You can take it alone or find it combined with cold, flu, and cough medications ...

This cough syrup controls coughs and comforts ... Active Ingredients: This Robitussin product includes Dextromethorphan HBr and Guaifenesin. These ingredients help suppress coughs ...