Method Guaifenesin Mucus Expectorant Syrup is a guaifenesin expectorant syrup designed to help loosen phlegm and thin bronchial secretions. Each bottle contains 16 fl oz, equivalent to 473 mL of oral liquid. The labeled strength is 100 mg of guaifenesin per 5 mL. The product has a cherry flavor and is formulated without sugar and alcohol. The listed package contains two bottles, providing a total of 32 fl oz or approximately 946 mL of product. It is manufactured for Method Pharmaceuticals, LLC. The official label identifies guaifenesin as the active ingredient and expectorant.