Glucosamine and Chondroitin are two popular over-the-counter supplements that have been proven to be very safe and vital for normal joint health. An Internet poll on runnersworld.com showed that 79.8 percent reported that their symptoms improved after taking Glucosamine and/or Chondroitin. Glucosamine and Chondroitin reduce pain and repair cartilage. They are considered component parts for molecules that make up tendons, ligaments, and bones. You may not see any effect from one to four months after taking the supplement. Neither supplement is known to upset the stomach or increase degeneration of the joint. One should be aware that age may affect their ability to restore joint structures due to the body’s natural decrease in glucosamine sulfate. Recovery from joint injury may be a long process but the right supplements can decrease the pain and speed the healing.