Welcome to Jacob Lab. We are committed to excellence and dedicated to providing you with the highest quality product. Stanley W. Jacob, M.D., F.A.C.S. pioneered the medicinal uses of DMSO (dimethyl sulfoxide) and its major metabolite, MSM (dimethyl sulfone), and devoted his life to studying them. He is considered the world's leading authority on their research and clinical applications. Dr. Jacob has designed our products using his experience from tens of thousands of patients and four decades of work.