Each bottle of Nutricost's L-Leucine contains 120 capsules for 30 servings. There are 2,000 mg of high-quality l-leucine per serving. All Nutricost products are made in a Gmp Compliant, Fda Registered Facility and all ingredients and finished products are tested by 3rd party, Iso-accredited laboratories. Only What You Need, Nothing You Don't! We've simplified our entire philosophy down to that single concept. This motto is what drives us to find the highest quality sources of the purest ingredients for each supplement we offer. From single ingredients to our simple formulations for targeted effects, each of our supplements stays clear and simple with what they provide.