GUAIFENESIN, LIQ O/S 100MG/5MLP/A (100/CS) Guaifenesin is used to treat coughs and congestion caused by the common cold, bronchitis, and other breathing illnesses Guaifenesin is an expectorant Alcohol-Free Dye content: FD&C red #40, FD&C green #3 Protect From Light Keep tightly closed; store at controlled room temperature, 20° - 25°C