THORNE Magnesium Bisglycinate - Powdered Magnesium Formula - NSF Certified for Sport - Gluten-Free - 6.5 Oz - 60 Servings

Why Thorne? We've proven better is possible. Tested and trusted since 1984, Thorne applies scientific rigor, clinical expertise, and uncompromising standards to every product – all to provide unparalleled solutions for your health.Our supplements go through four rounds of testing, ingredient validation, and trusted third-party certifications. Decades of clinical experience drive product development, translating research into bioavailable formulations. Our “No List” guides this work, identifying 33 ingredient categories of fillers, binders, and additives we refuse to use in our supplements.With Thorne, you can build a routine that actually works for you based on personalized recommendations backed by scientific data. Experience superior results guided by our researchers, physicians, athletes, and partners committed to scientific wellness.Headquartered in Summerville, South Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients. Thorne maintains internationally recognized certifications that demonstrate our commitment to excellence, including an exemplary record of compliance with the FDA’s current Good Manufacturing Practices (cGMP); certification by NSF, the “gold standard” for quality for dietary supplements; and an A rating from Australia’s TGA, the toughest regulatory agency in the world.