Guaifenesin (DM) 100mg Expectorant Capsules are used to relieve chest congestion and help clear mucus from the airways. Each bottle contains 100 capsules, with 100mg of Guaifenesin per capsule. Guaifenesin works by loosening and thinning the mucus in the chest, making it easier to cough up and clear from the respiratory tract. These capsules are typically used to treat conditions like colds, bronchitis, and other respiratory issues involving congestion.