Kappa Nutrition Magnesium 4-in-1 Advanced Complex blends highly bioavailable Magnesium Bisglycinate and Malate with Zinc and Vitamin D3 to support immune health, nerve function, muscle performance, and bone strength. Each serving delivers 280 mg elemental magnesium in clean, plant-based vegan capsules with no fillers, gluten, or GMOs. Made in a Texas GMP-certified facility for quality you can trust.