The most expensive product is not always the best. Compare the ingredients between products to insure that you are getting what you pay for. Some of the most popular products for canines include Drs. Foster and Smith's Joint Care, Cosequin made by Nutramax, and Glycoflex. Many veterinarians are just becoming aware of the benefits of glucosamine and chondroitin.
Most veterinarians gain their information about new products through major pharmaceutical companies.
Because the large pharmaceutical companies are not promoting this product it has taken longer to be introduced to veterinarians. Veterinarians that specialize in orthopedics or who keep current on all new products are usually very aware of the benefits of glucosamine and chondroitin and have used these products for years. In my experience I would say that most older dogs suffer from some level of osteoarthritis. There have been many studies done in Europe showing the benefits of these products. There is a complete absence of completed studies on these products in the United States although many are currently underway and initial reports confirm the results seen in Europe.