Purity products magblue - the magnesium zinc vitamin d3 purityblue blueberry super formula we combined magnesium bisglycinate buffered with vitamin d3, zinc, boron, and purityblue antioxidant - rich, organic blueberries from north america to your brain, heart, immunity, energy and more. Supports brain function, mood, and sleep promotes cardio bone, and muscle health supports healthy immune function. Purity products magblue super formula healthy - 90 tablets (30 servings)