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Source Naturals, L-Lysine, 1,000 mg, 100 Tablets

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Source Naturals, L-Lysine, 1,000 mg, 100 Tablets

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Source Naturals, L-Lysine, 1,000 mg, 100 Tablets

In Stock
100 Tablets
100 Tablets
250 Tablets
  • Expiration Date: January 2021
  • Shipping Weight:
    0.53 lbs
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  • Product Code: SNS-00142
  • UPC Code: 021078001423
  • Package Quantity: 100 Tablets
  • Dimensions:
    5 x 2.5 x 2.5 in, 0.45 lbs
    Switch to Metric units

Product Rank:

#5 in L Lysine >
Frequently Purchased Together
Product Overview


  • Dietary Supplement
  • Free Form

L-Lysine is an essential free-form amino acid which acts as a precursor for other amino acids, including 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 tablet daily.

Other Ingredients

Stearic acid, sorbitol, colloidal silicon dioxide, modified cellulose gum, and magnesium stearate.

Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, 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.


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 Tablet
  Amount per Serving % Daily Value
Calories 5  
L-Lysine (HCl) 1 g
†Daily Value not established.
iHerb Customer Reviews


Posted by iHerb Customer on April 13 2018 | Verified Purchase

Temper-evident seal was broken, so I cannot use this broduct. Odernumber 404292704 Helena Pesonen Tiilitie 9 B 37 90650 Oulu Finland

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Good overall product

Posted by iHerb Customer on February 10 2018 | Verified Purchase

Good product and helps in my exercise.

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Take daily

Posted by iHerb Customer on January 1 2018 | Verified Purchase

Great for the immune system, I don’t take medication so I have to stay healthy.

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Immune system booster like no other

Posted by VixiVixi on December 8 2017 | Verified Purchase

It's my second winter season with this product and I couldn't be happier with it. I am diabetic T1 and my immune system is weaker than normal so I am prone to common colds in the colder part of the year. I was giving Lysine to my cats, all rescued and mostly found in a bad shape. It worked wonders for them so I gave it a try last year and I didn't get sick for whole winter. I highly recommend L-Lysine for people with chronic disease. The only down for some people may be the size of the pill, it's huge, but it's only one a day.

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The tablets are huge, can't swallow them

Posted by iHerb Customer on November 29 2017 | Verified Purchase

Even when I break it in half it gets stuck in my throat and only goes down when I drink something hot.

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