Guaifenesin is an expectorant. It is used to break up congestion and mucous to make breathing
easier. Guaifenesin thins mucous, increases lubrication of the respiratory tract (lungs, nose and throat),
and increases the removal of mucous.
Phenylpropanolamine is a decongestant. It constricts (shrinks) blood vessels (veins and
arteries), which reduces swelling of mucous membranes in areas such as the nose and sinuses.
Guaifenesin and phenylpropanolamine is used to treat the symptoms of the common cold and of
infections of the sinuses, lungs, and throat.
Phenylpropanolamine, an ingredient in this product, has been associated with an increased risk
of hemorrhagic stroke (bleeding into the brain or into tissue surrounding the brain) in women. Men may
also be at risk. Although the risk of hemorrhagic stroke is low, the U.S. Food and Drug Administration
(FDA) recommends that consumers not use any products that contain phenylpropanolamine.
Guaifenesin and phenylpropanolamine may also be used for purposes other than those listed in
this medication guide.