Allium Cepa Plex provides a combination of synergistic homeopathic remedies formulated to specifically target the upper respiratory system. Chronic exposure to food and airborne allergies, especially in individuals with weakened immune system function, commonly causes inflammation of the mucous membranes of the nose leading to edema, nasal discharge, and obstruction. Allium cepa has been shown to be effective in treating the symptoms related to the common cold and allergic rhinitis such as lacrimation, sneezing, rhinorrhea, and pruritus. Allium Cepa Plex is indicated for all upper respiratory infections, including coughs with expectoration, nasal discharge and congestion, and restricted breathing due to congested airways or allergens.