Nutricost Manganese Capsules contain 8mg of Manganese Amino Acid Chelate in every serving, 120 servings per bottle. 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. This Nutricost supplement is manufactured in a GMP-compliant and FDA-registered facility, and each batch of every product is tested by independent, ISO-accredited laboratories to insure safety and quality.