Animal Welfare
Vet's Advice
Dr. Ian Sandler
Practicing Veterinarian
Rosedale Animal Hospital, Toronto, Ontario
Taking the Pain Out of Aging
Friday, January 08, 2010
Arthritis is among the common problems that inevitably afflict our four-legged friends. In most large dogs, the signs can appear within a few years of age. Small dogs and cats, however, may not show symptoms until later in life.

By the time cats and dogs reach ages 10 and 8, respectively, more than two-thirds of them will demonstrate some form of arthritis. As an owner, you will notice the signs. Some are obvious, such as muscle loss, a limp when walking or clumsiness when getting up off the ground. But it’s important to stay alert for more subtle indications that can range from a new reluctance to jump up on the couch or a loss of interest for running in the park.

Clients are often concerned that these visible symptoms are the result of a more serious underlying problem, such as a fracture or cancer. Arthritis is far more common than these diseases, and multiple reasons β€” from obesity and genetics to lack of exercise and poor conformation β€” can explain why it affects dogs and cats.
Whatever the predisposing factor, arthritis is the result of long-term destruction of articular cartilage. This degradation of cartilage causes pain and discomfort.

Glucosamine and chondroitin are normal substances found in the body all mammals and it helps in the formation and repair of cartilage and other tissue. The body synthesizes glucosamine through a biochemical process, and in normal situations, it can produce enough glucosamine for normal joint health. Although dogs and cats get some glucosamine through their diet, most of it is digested by stomach enzymes and destroyed. Additionally, glucosamine production diminishes with age.

Under the stress of arthritis, however, glucosamine supplementation can be highly beneficial to help support cartilage repair. Many pets respond well to nutritional supplements – in some cases better than people. Glucosamine and glucosamine-like products have been used for years to treat arthritis in both humans and companion animals, and they are a very safe and relatively inexpensive way to manage the condition. Glucosamine products have few side effects and work synergistically with many of the stronger arthritic medications, such as Metacam or Rimadyl.

It is always important to discuss all therapeutic options with your veterinarian. If you suspect that your pet suffers from arthritis, it is common to start a preventive course of glucoasmine supplementation. To date, there are no studies to prove that glucosamine will prevent the development of arthritis in the future. Many owners, however, do use glucosamine as a precaution before their pets show outward signs of arthritis as the products are so well tolerated.

What kind of glucosamine should I choose for my pet?

It is essential that the type of glucosamine you give your pet is pure. Human products can be safely used on pets. Many people choose to use a combination of glucosamine and chondroitin. Most products will start to have a positive effect within 2 to 3 weeks. Consult your healthcare practitioner for advice on formulas and dosage.
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