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Source Naturals, L-Lysine, 3.53 oz (100 g)

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Source Naturals, L-Lysine, 3.53 oz (100 g)

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Source Naturals, L-Lysine, 3.53 oz (100 g)

In Stock
  • Expiration Date: June 2020
  • Shipping Weight:
    0.16 kg
    Switch to Imperial units
  • Product Code: SNS-00135
  • UPC Code: 021078001355
  • Package Quantity: 3.53 oz
  • Dimensions:
    6.1 x 6.1 x 11.2 cm , 0.14 kg
    Switch to Imperial units

Product Rank:

#24 in L Lysine >
Frequently Purchased Together
Product Overview


  • Amino Acid Supplement
  • Free-Form Powder

L-Lysine is an essential amino acid which acts as a precursor for several other amino acids, including L-citrulline (needed in the body for normal protein metabolism) and L-carnitine (needed for fat metabolism). L-Lysine is crucial for the formation of collagen, a major part of the body's connective tissues. L-Lysine also contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs cycle.

Suggested Use

1/4 to 1/2 teaspoon daily between meals.

Other Ingredients

Suitable for vegetarians and Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no 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.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 1/2 Teaspoon
Servings Per Container: 73
  Amount Per Serving % Daily Value
L-Lysine (HCl) 1.36 g
†Daily Value not established.
iHerb Customer Reviews

Easy to use and keeps kitties healthy!

Posted by iHerb Customer on May 23 2016 | Verified Purchase

We use this all year round to keep our kitties healthy. Just a little sprinkle on their wet food and they are good to go. No measuring, no opening capsules. Nips a cold or virus in the bud so everyone is not sick all the time. We love this lysine!

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Cold sore relief

Posted by iHerb Customer on May 9 2016 | Verified Purchase

I've had cold sores for my entire life and lysine has never failed to give me relief. This one is excellent value for money vs tablets and great quality. I like powders as they tend to not have fillers and sugars in them.

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good stuff

Posted by iHerb Customer on April 6 2015 | Verified Purchase

Great product

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highly recommended

Posted by iHerb Customer on March 24 2015 | Verified Purchase

this is super, took care of my cold sore immediately and also give it to one of our Border Collie for his scratching, yes it stopped the scratching...

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Excellent Product

Posted by iHerb Customer on January 12 2014 | Verified Purchase

Excellent Product

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