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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: 11/2020
  • 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
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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.

    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

    Take daily

    Posted by iHerb Customer on Jan 01, 2018 | Verified Purchase

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

    Thanks for your feedback!

    Immune system booster like no other

    Posted by VixiVixi on Dec 08, 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.

    Thanks for your feedback!

    The tablets are huge, can't swallow them

    Posted by iHerb Customer on Nov 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.

    Thanks for your feedback!

    Good product for cold sores.

    Posted by iHerb Customer on Nov 29, 2017 | Verified Purchase

    Used this (1 tablet 2/day) in conjunction with Rx medication and the "SuperLysine Cold Stick" and stopped my cold sore from forming. Had 2 small blisters forming when I started medication, lysine and using the cold stick they never got worse, no new ones formed and they were healed by 3 days!

    Thanks for your feedback!

    Good quality Lysine, works well to keep my immunity up

    Posted by Cbones on Nov 08, 2017 | Verified Purchase

    These tablets are very big, but tasteless so not too bad to swallow. But if you're someone that struggles with big tablets, then get Source Naturals other Lysine, in capsules. They are all very good quality, they are easy to digest and swallow, and they seemed to make a marked difference in my immunity, especially prevention of cold sores. Note, to actively get rid of a cold sore infection that was in full force, I had to up the dosage significantly, to about 4-6 capsules daily, for about 2 days. Otherwise, 1-2 per day is perfect for prevention. I also felt it has helped my body and joints, and I feel less pain too.

    Thanks for your feedback!