The supplements that many people with osteoarthritis take are chondroitin sulfate and glucosamine. Medical research is ongoing with the focus on pursuing scientific evidence that supplements repair cartilage or can stimulate new cartilage components. According to the Arthritis Foundation, some other supplements that have been supported by past research as beneficial (more is needed) include curcumin, turmeric, ASU (avocado soy unsaponifiable), bromelain, fish oil, and ginger, to name a few.