All Sport Formula ingredients meet U.S.P. standards (United States Pharmacopoeia) and are tested for potency, purity and optimum bio-availability. Our ingredients are blended in a state of the art facility that meets the G.M.P certification (Good Manufacturing Practices) from the N.N.F.A. (National Nutritional Foods Association since 1936), a third party independent auditor. Our facility also meets the N.S.F. certification (National Sanitation Foundation) for a sterile-manufacturing environment. Our manufacturing practices exceed industry standards.