L-Leucine Featured
L-Leucine Instantized Supplement FactsL-Leucine Instantized Unflavored 200gL-Leucine Instantized Unflavored 800gL-Leucine Instantized Unflavored 1600g



Pure Pharmaceutical Grade L-Leucine

Price above is for 200 grams, save even more with bigger sizes

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Product Description

What is L-Leucine?(abbreviated as Leu or L)[2], L-Leucine is an α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. It is an essential amino acid, which means that humans cannot make it within their body. So for the body to get this key amino acid in the system it has to pull them from a variety of foods. Its codons are UUA, UUG, CUU, CUC, CUA, and CUG. With a hydrocarbon side chain, leucine is classified as a hydrophobic amino acid. It has an isobutyl R group. Leucine is a major component of the sub units in ferritin, astacin and other ‘buffer’ proteins.

Food sources for leucine are: meat, nuts, beans, brown rice, soy flour, whole wheat and eggs.

What are the benefits/uses?

Leucine contributes to regulation of blood-sugar levels; growth and repair of muscle and bone tissue; growth hormone production; and wound healing. Leucine also prevents breakdown of muscle proteins after trauma or severe stress and may be beneficial for individuals with phenylketonuria. It is also one of the three Branched Chain Amino Acids and works in conjunction with both valine and isoleucine.  Recent research suggests that higher levels of leucine with valine and isoleucine product better results and not only contributes to regularing insulin levels but can also reverse type 2 diabetes and contribute to weight loss. According to the study in the previous link, Leucine has also been shown to reduce LDL Cholesterol by 27%.

Recommended dose: The proper dosage depends on a variety of factors – body weight, activity level, lifestyle stress, overall health, and diet.  There are no established daily recommendations for this supplement.  As a dietary supplement take 25 – 65 milligrams per pound of bodyweight per day. It is recommended that supplemental leucine be used in union with both isoleucine and valine.  Mix into water or your favorite beverage 1-2 times daily or as directed by your physician. Mix for 20-30 seconds using a shaker cup or mix thoroughly with a spoon. May not mix very easily. May be hygroscopic and may clump during shipment. This does not affect the efficacy of the product; just the texture. Try mixing in sport drink or anything with a ph less than water to improve mixability.  It may be necessary to let it sit for awhile.

Any Side Effects?

Leucine supplements taken even in somewhat high amounts can produce physical symptoms similar to those seen during hypoglycemia in the body. Leucine supplements taken at exceedingly high levels can induce more ammonia accumulation in the body and might result in pellagra in the person. 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. This advice is also recommended for anyone suffering from a health condition.

Pregnant and nursing women should only take an amino acid such as glutamine after consulting your physician.

Shelf Life:  This product will retain a 2 year shelf life from the date of manufacturer if properly sealed and stored in a dry, cool environment outside of direct sunlight.

Why Muscle Feast, LLC?

We guarantee our supplements to be the freshest and purest available:   Muscle Feast, LLC 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

FREE dosing scoop: Get the exact dosage every time with a free single-dose scoop. Fill to the top, not the line.
How can our Quality be so high and our prices so low?  We are able to keep our pricing so low because we are a relatively small manufacturer with very low overhead and we sell direct to the public.  We source the same great suppliers used by more popular brands.


Additional Information


200 grams (.44 lbs), 800 grams (1.76 lbs), 1600 grams (3.52 lbs)


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