Swanson Mallow Root - Mallow Root Althaea Root Swanson Mallow Root is natures perfect solution for respiratory and gastrointestinal comfort and health. Mallow roots rich mucilage content makes it an excellent choice for protecting and supporting the mucous membranes lining the respiratory and gastrointestinal tracts. Swanson Mallow Root: Soothes the mucous membrane of the respiratory tract Promotes gastrointestinal health In general, marshmallow root is a very soothing herb for any irritation of the mucous membranes of the body. Marjoram is also attributed with immune-boosting properties, as it helps white blood cells destroy invading microbes. Dosage: Take 1 capsule daily with water.