Nutricost 3mg, 5mg, or 10mg Capsules contain 240 vegetarian capsules of boron in each bottle for 240 servings. From Boron Citrate. This product is vegetarian friendly, non-GMO, and gluten free. Each batch of every product is tested by independent, ISO-accredited laboratories to ensure safety and quality. Our boron capsules are manufactured in a GMP Compliant and FDA Registered Facility.