The unique combination of ingredients makes Comfort MSM a powerful and safe tool for treating the discomfort of arthritis, hip dysplasia, traumatic joint injuries and the aches and pains associate with getting older. Contains ultra pure OptiMSM to build cell membranes and block pain impulses along with c-fiber network of nerves. Prosta-Gx (Cetyl Myristoleate) is a powerful, safe, natural anti-inflammatory without any of the dangerous side effects of pharmaceutical NSAID's. Ester-C is beneficial to the joints and is faster, more effective than normal Vitamin C. Comfort MSM contains glucosamine HCL 150 mg per tablet to remodel joints and trace minerals to assimilate vitamins and other nutrients. For dogs and cats.