Provided is a hyaluronic acid (HA) composition for use in treating or preventing mucosa related disorders or diseases including a mixture of HAs having different average molecular weights and different rheological, isolation, tissue scaffold and degradation properties. The resulting formulation demonstrates an optimal balance between adhesion, tissue scaffold and treating time on the treatment and prevention of mucosa related disorders or diseases including conjunctivitis, otitis, allergic rhinitis, gingivitis, oral ulcer, bronchitis, gastroesophageal reflux disease (GERD), esophagitis, gastritis, enteritis, peptic ulcer, inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), urethritis, cystitis and vaginitis.
