Cartil Collagen 30'sCartil Collagen is a nutritional supplement made from animal or fish materials. It's rich in amino acids that play an important role in the building of joint cartilage and it may have anti inflammatory effects. Trials into collagens role in treating osteoarthritis give mixed results. Studies into the role of collagen in treating rheumatoid arthritis suggest that it doesnt have a significant effect in reducing pain and joint inflammation.