Support your overall health with key minerals delivered in veggie capsules. Formulated by Hans Nieper, M.D. of Hannover, Germany, specifically for Advanced Research™, Membrane Complex features three important minerals for human health: calcium, magnesium and potassium. Each capsule delivers 50 mg of elemental calcium, 30 mg of elemental magnesium and 43 mg of elemental potassium. Made in the USA and manufactured exclusively for Advanced Research.