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Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules
Source Naturals L-Lysine 500 MG - 200 Capsules

Source Naturals L-Lysine 500 MG - 200 Capsules

L-Lysine 500 mg 200 Caps - L-lysine is one of the most important essential amino acids. It acts as a precursor for several other aminos, including L-carnitine, which is needed for normal fat metabolism. L-lysine is also crucial to the formation of collagen, a major part of the body's connective tissues, and it contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs Cycle. Source Naturals Free Form L-Lysine supplement is free of yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, artificial colors flavors and fragrances.

L-Lysine 500 mg 200 Caps - L-lysine is one of the most important essential amino acids. It acts as a precursor for several other aminos, including L-carnitine, which is needed for normal fat metabolism. L-lysine is also crucial to the formation of collagen, a major part of the body's connective tissues, and it contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs Cycle. Source Naturals Free Form L-Lysine supplement is free of yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, artificial colors flavors and fragrances.

Quantity:

100 Tablets
200 Tablets

Size:

1,000 Mg

Source Naturals L-Lysine 500 MG - 200 Capsules

L-Lysine 500 mg 200 Caps - L-lysine is one of the most important essential amino acids. It acts as a precursor for several other aminos, including L-carnitine, which is needed for normal fat metabolism. L-lysine is also crucial to the formation of collagen, a major part of the body's connective tissues, and it contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs Cycle. Source Naturals Free Form L-Lysine supplement is free of yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, artificial colors flavors and fragrances.

L-Lysine 500 mg 200 Caps - L-lysine is one of the most important essential amino acids. It acts as a precursor for several other aminos, including L-carnitine, which is needed for normal fat metabolism. L-lysine is also crucial to the formation of collagen, a major part of the body's connective tissues, and it contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs Cycle. Source Naturals Free Form L-Lysine supplement is free of yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, artificial colors flavors and fragrances.

Price comparison

Price data powered by pricesAPI.io

Last updated at 06/29/2026 06:17:55

iHerb

$25.87

Source Naturals, L-Lysine, 500 mg, 200 Capsules

Delivery $40

Price history

Price history

Reviews

Excellent!
31 October 2022iHerb Customer

originally posted on iherb.com

Good quality and ingredients product. it really works as intended. Will definitely get more soon! Thank you so much for this. it was made of high quality ingredients. Plus the packaging and sizes were perfect. over all good quality. i love the smell and the looks of it. Taste is ok, no funny taste. Hopefully to benefit from this protein, thank you

Good
19 June 2023iHerb Customer

originally posted on iherb.com

These are definitely helping. When tingling happens I take them before an actual outbreak and usually don't have outbreak. If I do miss and end up with an outbreak, it doesn't take long to be rid of it and so much less expensive than the meds the dr prescribed. I'm thinking of trying the powder formula my dad takes (different brand). But I like these- easy to travel with and even though they are huge, i can actually swallow them with a little liquid. No burping or upset stomach either. So little flavor, I don't notice it unless I let them set on tongue awhile, and they have a coating that is flavorless. The capsules are not offensive in flavor (sometimes i forget to have my liquid ready)

Helps to avoid cold, but maybe toxic for liver
21 September 2023iHerb Customer

originally posted on iherb.com

This is indispensable thing for me in winter. I am prone to colds.When I feel that I am about to get sick (for example, starting to feel soar throat, or nose congestion, or had my legs cold for long period), I take one capsule of this, and it is stopping the virus, and cold doesn't occur. It's important to take this at early stage of symptoms, in order to stop cold. Too late - won't help.However, in my case it also has side effects. When I take it, I wake up around 5 am next day, and I am very thirsty and have bitter taste in my mouth. I might need 2-3 glasses of water, to go back to sleep.So, there might be some toxicity effect for liver (I am guessing). So, it's a tradeoff. But , if not used too often, it's still great when you can stop cold.

Specification

Best ByJuly 2025
Dimensions13.7 x 7.4 x 7.4 cm , 0.2 kg
Serving Size1 Capsule

Price comparison

Updated 1 day ago
iHerb

$25.87

Source Naturals, L-Lysine, 500 mg, 200 Capsules

Delivery $40

Price history

Price history

Reviews

Excellent!
31 October 2022

Good quality and ingredients product. it really works as intended. Will definitely get more soon! Thank you so much for this. it was made of high quality ingredients. Plus the packaging and sizes were perfect. over all good quality. i love the smell and the looks of it. Taste is ok, no funny taste. Hopefully to benefit from this protein, thank you

iHerb Customer originally posted on iherb.com
Good
19 June 2023

These are definitely helping. When tingling happens I take them before an actual outbreak and usually don't have outbreak. If I do miss and end up with an outbreak, it doesn't take long to be rid of it and so much less expensive than the meds the dr prescribed. I'm thinking of trying the powder formula my dad takes (different brand). But I like these- easy to travel with and even though they are huge, i can actually swallow them with a little liquid. No burping or upset stomach either. So little flavor, I don't notice it unless I let them set on tongue awhile, and they have a coating that is flavorless. The capsules are not offensive in flavor (sometimes i forget to have my liquid ready)

iHerb Customer originally posted on iherb.com
Helps to avoid cold, but maybe toxic for liver
21 September 2023

This is indispensable thing for me in winter. I am prone to colds.When I feel that I am about to get sick (for example, starting to feel soar throat, or nose congestion, or had my legs cold for long period), I take one capsule of this, and it is stopping the virus, and cold doesn't occur. It's important to take this at early stage of symptoms, in order to stop cold. Too late - won't help.However, in my case it also has side effects. When I take it, I wake up around 5 am next day, and I am very thirsty and have bitter taste in my mouth. I might need 2-3 glasses of water, to go back to sleep.So, there might be some toxicity effect for liver (I am guessing). So, it's a tradeoff. But , if not used too often, it's still great when you can stop cold.

iHerb Customer originally posted on iherb.com
My Overall Favorite Lysine
1 February 2017

I have been using Lysine for over 12 years now. I was lucky enough to manage a health food store back then, had easy access to everything, and used Herpanacine to control my oral herpes breakouts (yes, I know we prefer to call them cold sores, but where I live now, they just call it herpes!). Well, the Herpanacine is a truly great product, but too expensive for me personally, so I just made the switch to regular L-Lysine. I believe all Lysine pretty much works if you take enough, but it has been my personal experience that this one seems to be particularly effective. It's been my Lysine of choice for about a year now. At first I was hesitant to try it, I normally prefer caplets, but I was won over by the value, as you get a full 1000 mg per (huge) tablet. I take ... MoreI have been using Lysine for over 12 years now. I was lucky enough to manage a health food store back then, had easy access to everything, and used Herpanacine to control my oral herpes breakouts (yes, I know we prefer to call them cold sores, but where I live now, they just call it herpes!). Well, the Herpanacine is a truly great product, but too expensive for me personally, so I just made the switch to regular L-Lysine. I believe all Lysine pretty much works if you take enough, but it has been my personal experience that this one seems to be particularly effective. It's been my Lysine of choice for about a year now. At first I was hesitant to try it, I normally prefer caplets, but I was won over by the value, as you get a full 1000 mg per (huge) tablet. I take several supplements daily and prefer to have one larger pill over two smaller pills otherwise I become overwhelmed as my daily number of pills go up. As I mentioned, these pills are pretty huge, but for me, manageable. I also didn't think they would work so well...my theory is that caplets work better because powder should be more absorb-able...not so apparently! Since using this product, I finally have control of my breakouts. This past year I would take them anytime I ate something rich in L-arginine, but have recently added one pill to my daily pill regimen. I forgot that stress and other factors can also induce cold sores, so so far, one pill a day has been keeping my cold sores at bay. Good stuff!! If you can handle swallowing reasonably large pills, these ones are the best.

iHerb Customer originally posted on iherb.com
Supporting collagen production, crucial for skin health and elasticity
18 September 2023

L-Lysine is an essential amino acid that offers a myriad of health benefits. Specifically for women, it plays a vital role in supporting collagen production, crucial for skin health and elasticity. Additionally, L-Lysine has been linked to the promotion of healthy hair growth, aiding in calcium absorption which can benefit bone health, and potentially providing support during times of stress. It's an excellent supplement to consider for those seeking holistic ways to enhance overall well-being.

iHerb Customer originally posted on iherb.com
great for skin
28 August 2023

I purchased L-Lysine to help with maintaining skin health and anti ageing. 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. I really like the quality.

iHerb Customer originally posted on iherb.com
Прекрасно!
11 July 2022

Lysine is an amino acid used by the body for protein synthesis. It cannot be generated in the human body and is one of the essential amino acids. In this regard, lysine must enter the human body along with food intake.This substance is necessary for the growth of muscle fibers, their repair, as well as for the synthesis of carnitine, a compound used by most cells. In addition, this amino acid takes part in the transportation of fats and their conversion into energy necessary for the functioning of organs and body systems.. The lack of this substance can lead to undesirable consequences in the form of the development of various diseases and poor health. In this regard, lysine should be included in your daily diet without fail.

iHerb Customer originally posted on iherb.com

Specification

Best ByJuly 2025
Dimensions13.7 x 7.4 x 7.4 cm , 0.2 kg
Serving Size1 Capsule