Suffering From Chest Congestion? Guardian Mucus Relief - Thins and Loosens MucusMakes Coughs more productiveRelieves Chest Congestion Guaifenesin is an expectorant. It works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier Are you a smoker, or suffering from COPD? Check with your doctor and ask about Guardian Guaifenesin Extended Release, Each Pill lasts 12 Hours Guardian Mucus Relief's special formulation eliminates the need for a bi-layer tablet, while still giving you the same immediate and extended release. Each pill starts acting right away and lasts for 12 hours. BLUE DYE FREE ! Our pills do not contain any blue dye that many are allergic to ! Say goodbye to Blue Dye ! Made in USA Guardian Mucus Relief is Made in USA ! At Guardian we strive to make superior quality products ! By selling direct to customers, we save on costs and pass on the savings to you. So why pay more for the Brand ? If you consume these frequently, check out our higher count products in bottles (100 count and 500 count) and save more !