What we do know based on medical research is that:

• Glucosamine in the form of liquid  reverse a few of the damage already caused;
• Glucosamine in the form of liquid   could stop the progression of arthritis;
• Glucosamine in the form of liquid   could ease the pain;
• Glucosamine in the form of liquid  reduces inflammation;

Glucosamine in the form of liquid is more helpful to the sufferers of degenerative arthritis – both in humans and animals. Several studies have been proven that liquid glucosamine is effective in easing degenerative arthritis pain, renovating synovial fluid, repairing joints and rehabilitating cartilage which have been smashed from degenerative joint disease. Each individual produces some amount of glucosamine (C6H13NO5) within their bodies.

When people become old, their body system lose the capacity in order to make sufficient amount of   therefore the cartilage  tissue in their joints especially weight bearing joints, such as the knees,  hands and hips is damaged, then solidifies and forms osteophyte, deformed joints, limited joint movement and causing pain.
This news was first revealed in the early 1980s in the European medical community. By the end of the 90’s, several placebos controlled, double-blind, glucosamine studies and experiments had been published, stating that glucosamine was certainly very useful to degenerative arthritis sufferers, and it was safe for long-term use. With such big news spreading very fast, the glucosamine industry became more popular and large.
Almost every main vitamin or nutraceutical company put out a glucosamine liquid supplements and products, and now it could be bought in just about every health food store, food store,  vitamin store, chiropractors office and wellness clinic. But, in order to gain market share with their glucosamine supplements and products, several companies often put out supplements and products with little regard to the quality of the supplement being produced.