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

$20.63 $20.63 (Saved $16.35)

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

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

In Stock
  • Expiration Date: Mar 2021
  • Shipping Weight:
    0.53 lbs
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  • Product Code: SNS-02054
  • UPC Code: 021078020547
  • Package Quantity: 240 Capsules
  • Dimensions:
    3.1 x 3.1 x 5.6 in, 0.45 lbs
    Switch to Metric units
Combo Offer!
Save $5.00 when you purchase these items today for only $40.63
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

Good source

Posted by iHerb Customer on Apr 22, 2017 | Verified Purchase

This is a great way to take leucine, the most important ingredient of branch chain amino acids. Pure leucine in capsule form, and with no added flavourings that are used in the majority of bcca powders to disguise the appalling taste. Recommended.

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Great product

Posted by iHerb Customer on Mar 19, 2017 | Verified Purchase

My father likes this product, he says it helps him preserve his muscles with age.

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not good

Posted by iHerb Customer on Jul 02, 2016 | Verified Purchase

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 iHerb Customer on Oct 10, 2014 | Verified Purchase

bad and very expensive

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Good product

Posted by iHerb Customer on Apr 26, 2014 | Verified Purchase

Good for strength and great price.

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