Supplements for joint health typically contain glycosaminoglycans (GAGs). GAGs promote the health of cartilage, which is the strong, elastic tissue lining the bone surfaces in joints.

Cartilage cells naturally produce glycosaminoglycans, which when combined with water provide cushioning to help protect your pet’s skeletal structure during movement and exercise.

The most common GAG is chondroitin sulfate, a substance that is naturally present in healthy connective tissue and cartilage. Another is glucosamine, and a third GAG naturally found in normal cartilage is hyaluronic acid which helps maintain its flexibility, elasticity, and strength.

Perhaps the best natural source of glycosaminoglycans is eggshell membrane – the clear, slimy fluid lining the inside of egg shells that usually gets thrown in the garbage right along with the shell. Eggshell membrane contains not only glucosamine, chondroitin, and hyaluronic acid, but also collagen, elastin, two important amino acids that give elastin its rubbery quality, and transforming growth factor-b.

Another excellent ingredient to look for in a joint support supplement is cetyl myristoleate, a potent joint lubricant.