VPL Duralactin Canine Joint Plus Soft Chews Triple Strength - 90 Soft Chews Same great product as Duralactin but with added Glucosamine HCI and MSM to Support Joint Health and Function. Duralactin is unique in the fact that it can be used for many different types of inflammation. Great for aging dogs, breeds that are prone to inflammation, and pets that cannot take other supplements or are not responding to other supplement. Duralactin 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 away. Also, there are no side effects associated with Duralactin.