Same great product as Duralactin but with added Glucosamine HCI and MSM to Support Joint Health and Function10Duralactin is unique in the fact that it can be used for many different types of inflammation10Great for aging dogs, breeds that are prone to inflammation, and pets that cannot take other supplements or are not responding to other supplement10Duralactin does not require an initial dosing period, but rather works right away, making it more cost effective and makes you feel better by getting your dog help right away10Also, there are no side effects associated with Duralactin