I take Hyaluronic acid which is in the vitamin dept. of our local Walmart. It comes in an injectable form for your doctor to inject into joint areas, such as knees, but this other form is a capsule you take orally. I've talked to people who have used both forms, and they told me that the oral capsule works much better. It costs about $9.50 for 60 capsules, and I take 4 a day. It really helps a lot.