Chondroitin sulfate C sodium is widely used in the medical and pharmaceutical industries, primarily for its role in joint health. It is a key component in dietary supplements aimed at alleviating symptoms of osteoarthritis, as it helps to reduce pain, improve joint function, and slow cartilage degradation. Additionally, it is utilized in the formulation of eye drops to treat dry eye syndrome, where it acts as a lubricant and promotes corneal healing. In cosmetic products, it is incorporated for its hydrating and skin-soothing properties, enhancing skin elasticity and moisture retention. Its biocompatibility also makes it suitable for use in tissue engineering and regenerative medicine, where it supports cartilage repair and regeneration.