HD tablets help to increase the production of fluid in the joints resulting in improvement in cases of arthritis (stiffness due to old age ) and the pain disappearing altogther, in some cases. MSM (Methyl sulfonyl methane) is a pro-biotic substance that naturally occurs in dairy products, vegetables and fruits .The symptoms of HD (hip dysplasia) are muscular pains and stiffness. HD tablets with MSM will not cure the disease, but can help to alleviate the pain caused by aching muscles and joints. HD tablets increase the production of fluid in the joints resulting in not cure the disease, but can help to alleviate the pain caused by aching muscles and joints