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Guaifenesin is an over-the-counter expectorant medication used to relieve chest congestion from colds, flu, or bronchitis. It works by thinning and loosening mucus in the airways, making coughs more productive and easier to clear
Guaifenesin is an over-the-counter expectorant medication used to relieve chest congestion from colds, flu, or bronchitis. It works by thinning and loosening mucus in the airways, making coughs more productive and easier to clear