Canine Joint Health Soft Chews (Glucosamine, Creatine & MSM) Musculoskeletal supplement containing glucosamine hydrochloride, creatine and methylsulfonylmethane (MSM) for use in dogs. ~ Dietary supplement delivers the essential nutrients known to be beneficial to maintain healthy joints and muscles. ~ Will help replenish joint fluids and optimize muscle performance, strength and endurance.