2800mg of L-Leucine per serving

HPLC certified


Mixes easily in water with no grit or residue


Scoop included

    Muscle Feast L-Leucine is designed to:

    Stimulate muscle protein synthesis

    Decrease muscle soreness

    Lessen recovery time between workouts

    Increase lean muscle mass

    Uptake glucose into cells

      What is L-Leucine?

      Leucine is one of the threeBranched Chain Amino Acids and sometimes referred to as the 'main' amino acid due to the most popular benefit of BCAAs (muscle building) being mostly due to leucine. Leucine is an activator of the protein known as mTOR, which then induces muscle protein synthesis via S6K; the other two BCAAs may also activate mTOR, but are much weaker than leucine in doing so

      What are the benefits?

      By itself L-Leucine can stimulate muscle protein synthesis; the process responsible for muscle growth and recovery. This is why it is often referred to as the “main” amino acid.
      Supplementation with leucine has been shown decrease muscle soreness, lessen recovery time between workouts, and increase lean muscle mass. Howatson et al. (2012) discovered that leucine (combined with isoleucine and valine) administered before muscle damaging resistance exercises reduced indices of muscle damage and accelerated recovery in resistance-trained males.

      Recommended dose:

      2.5-3 grams taken two to three times daily between meals and with a carbohydrate snack

      Any Side Effects?

      There have not been any reported side effects with BCAA supplement intake: excess BCAAs are usually converted to other amino acid forms, used up as energy, or stored up as fat. However, if you have liver or kidney disease, you should not take in high doses of amino acids without asking your doctor. It is crucial that you always speak to a knowledgeable healthcare provider before taking any dietary supplements, including glutamine. This advice is also recommended for anyone suffering from a health condition.


      As an adult dietary supplement, take one serving (2.8g) two to three times daily with water or as an addition to a protein shake. This product may be consumed immediately post-training.

      Why Muscle Feast?

      We guarantee our supplements to be the freshest and purest available. Muscle Feast supplements are manufactured under the strictest HACCP, FDA, and Kosher standards, producing the highest quality and purest supplements available. Our raw ingredients undergo state of the art analysis to ensure zero impurities and strict adherence to product labeling. When it comes to price and quality you can't beat Muscle Feast. We guarantee it!

      Important facts you should know about our supplements:

      • Laboratory tested for purity
      • Strict adherence to GMP, HACCP and Kosher standards
      • Licensed and regularly inspected by The Ohio Department of Agriculture
      • Freshly manufactured - not expired or closeout
      • Spoon mixes with no gritty taste or residue
      • Backed by the Muscle Feast 30-day money back guarantee

      How can our quality be so high and our prices so low?

      We are able to sell the highest quality products at these prices because:

      We have over 30 years experience in raw material procurement and we are very selective in what material we use.

      We work with several of the best medical doctors in the country and only carry products they support.

      We have our own quality test equipment to ensure we only use the highest quality products available.   

      Leucine has a rating of 4.8 stars based on 11 reviews.