Natural Balance (formerly TriMedica) - Pure Msm (1000 mg, 240 capsules)
Most forms of MSM, including those imported from China, are synthetic and are derived from a fossil fuel source. On the other hand, TriMedica PureMSMTM is an all-natural source of MSM derived only from pine trees. PureMSMTM contains no addition or dilution with fossil fuel derived material.