Mega MSM delivers 10, 000 mg of MSM per serving in a pelleted form that contains stabilized rice bran for palatability. This Mega MSM formula delivers the joint benefits of MSM, combined with the advantages of stabilized rice bran. Additionally, the pelleted formulation provides a socially responsible way to market MSM over the counter.5 lbs. is a 113-day administration for one horse | Select the Best Mega MSM Pellets Equine Supplement | Size 5 lb