I am currently taking Glucosamine with Calcium and Vitamin D tablets. On the box there is written that they are good for maintaining healthy joints and muscles and bones. Is Glucosamine that ingredient that re-builts that "jelly / cap" that we have around; covering the joints. If not then what type of ingredient does all this? Thanks in advance!

I am currently taking Glucosamine with Calcium and Vitamin D tablets. On the box there is written that they are good for maintaining healthy joints and muscles and bones. Is Glucosamine that ingredient that re-builts that "jelly / cap" that we have around; covering the joints. If not then what type of ingredient does all this? Thanks in advance!