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Source Naturals, L-Leucine, 500 mg, 240 Capsules

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$18.49 (50)
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In Stock
  • Expiration Date: Aug 2020
  • Shipping Weight: 0.53 lbs (0.24 kg)
  • Product Code: SNS-02054
  • UPC Code: 021078020547
  • Package Quantity: 240 Capsules
  • Dimensions: 3.1 x 3.1 x 5.6 in, 0.45 lbs (0.2 kg)
Product Overview


  • Amino Acid Supplement
  • Free-From
  • Energy Support

L-Leucine is an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAAs, especially leucine, stimulate muscle protein synthesis and may be the major fuel involved in anabolic reactions. This makes them especially important for body builders and other athletes in sports that demand explosive strength.

Suggested Use

2 to 3 capsules daily between meals.

Other Ingredients

Gelatin (capsule), silica, and magnesium stearate.

Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.


Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 3 Capsules
Servings per Container: 80
  Amount Per Serving % Daily Value
Calories 5  
L-Leucine 1.5 g
†Daily Value not established.
iHerb Customer Reviews

not good

Posted by 5640879658384811183 on Jul 04, 2016

I didn't see any difference,I am using over 3weeks no results,doesn't work for mee

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bad and very expensive

Posted by 4871441214480765874 on Oct 10, 2014

bad and very expensive

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Good product

Posted by Reviewer2849359 on Apr 26, 2014

Good for strength and great price.

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Wrong product ordered

Posted by 4776795722922697152 on Feb 09, 2014

I do not want to rate this as I haven't consumed it at all due to my mistake and haste of not really reading carefully the product's ingredients list, but since iHerb mandates a review with rates, so I guess 1 star it is, though NOT BECAUSE it is a bad product. I was looking for vege caps but wrongly bought this instead.

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Very Good

Posted by 4616651412503945927 on Dec 04, 2013

That's a very good amino.

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