Phd nutrition reinforce joint supplements are formulated to help improve physical performance and promote joint healthr phd nutrition reinforce helps your bones joints and cartridge to remain healthy during intense trainingr phd nutrition reinforce formula contains glucosamine chondroitin and hyaluronic acid ndash ideal to help supplement an intense training plan or to be used as part of an active lifestyler phd nutrition reinforce benefits from the addition of vitamin c and msm to assist