Glucosamine

Below show the nutritional information of a bottle of glucosamine supplements commonly taken by elderly persons to alleviate joint pains. Name 2 homologous families that are present.

Glucosamine is a precursor of glycoasminoglycans, a component of the joint cartilage. Hence, it is taken as a supplement to prevent cartilage degeneration and some components such as chondroitin is said to improve its efficacy.