1. Glucosamine- This is basically an amino sugar which has a decent ability for relieving joint pain caused by osteoarthritis. It is also known to help restore movement in affected joints. However, if you are allergic to shellfish, you might not want to consume glucosamine that comes from sea creatures. If you suffer from diabetes, you might find your blood sugar levels going out of control as well. It is also recommended that pregnant women stay away from this supplement. As far as side effects are concerned, people are known to complain of diarrhea, constipation and even nausea when consuming glucosamine on a regular basis.
2. Chondroitin- This is basically a sulfate molecule which occurs naturally in the human body. It is known to provide a different chemical which helps in the formation of cartilage. The only problem is that people don't really understand its benefits as much as glucosamine. There are some experts who believe you can maintain the health of your cartilage with chondroitin since it helps absorb fluid in your connective tissue. The only problem is that there is no conclusive proof that chondroitin will help in the repair of cartilage or even that it prevents it from further deterioration.
3. Calcium- These supplements are quite popular in multiple forms like calcium carbonate or calcium citrate. The only difference between both these supplements is in the calcium content. Citrate contains half as much as carbonate although old people prefer citrate as it is easier to absorb by the digestive system.