This product has a great performance quality and price. The number one veterinarian-recommended joint health supplement brand. Joint function and health can be supported in your horse with the administration of cosequin. Since cosequin provides nutrients that affect the structure and function of the joint changes may occur gradually. You should notice changes in 2 to 4 weeks in most candidates. Some horses may take 5 or 6 weeks to exhibit noticeable changes. Manufacturer: NUTRAMAX - COSEQUIN D