Your body makes hyaluronic acid naturally. It gathers in your skin, joints, and connective tissues where it holds onto water and gives structure to soft tissue.
Oral supplements aim to support skin moisture and firmness, and may help joints feel comfortable and mobile by keeping them slick and cushioned.
Most people swallow it as a pill or liquid with food to help absorption. You will also find it in face serums and in professional injectable treatments.
Stomach upset can happen at high doses, though most people handle oral forms fine. Stick to the amount on the label.