Guaiphenesin 300mg Capsules are formulated to help relieve chest congestion and loosen mucus, making it easier to clear airways. Guaiphenesin acts as an expectorant, thinning and loosening phlegm in the respiratory passages, which can provide relief for those experiencing symptoms from colds, bronchitis, or other respiratory conditions. These capsules are convenient for adults seeking effective congestion relief and improved breathing comfort.