Nutricost's Alpha GPC offers 300mg of alpha GPC 50% (L-alpha-glyceryl phosphorylcholine) per capsule (600mg per serving). Each serving also contains 300mg of choline. There are 60 capsules for 30 servings in each 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. 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.