Diet & Fitness

Amounts for oral supplementation have not been established, due to lack of research, and it is unknown whether hyaluronic acid can be absorbed from the gastrointestinal tract. Topical products are applied in the mouth two or more times per day, to the nose three to four times per day, or with bandaging for skin ulcers. Eye drops containing 0.1 to 0.4% sodium hyaluronate are used three or more times per day, and ear drops containing 1% sodium hyaluronate are used once a day.