Muscle Health and Recovery 500 mg Per CapsuleFeaturing AjiPure®Dietary Supplement Total Wellness For Mind, Body & Home Unsurpassed Purity & Potency Science-Backed Quality Since 1969VegetarianL-leucine is an essential amino acid and it must be acquired through diet or supplementation. Food sources for L-leucine are meat, almonds, cashews eggs, fish, chicken, lentils and liver. It helps increase energy, enhance endurance and aid in muscle recovery.