Each bottle of Nutricost Potassium Magnesium Citrates provides 210mg of Magnesium and 99mg of Potassium in 2 easy-to-swallow gelatin capsules a serving. Each bottle contains 240 capsules for 120 servings. Nutricost, located and headquartered in the USA, only uses the best ingredients to ensure maximum quality and to help you feel your best! By keeping our supplement recipes simple and clean, you get the best experience possible with Nutricost. Our supplements are manufactured in a GMP-compliant and FDA-registered facility; and each batch of every product is tested by independent, ISO-accredited laboratories.