A close-up image of a NaturalCure Labs Clean L-Lysine bottle, showing the front label with 600mg dosage, key benefits for immune support, and 120 capsules count, emphasizing the product's premium, non-GMO, and gluten-free attributes.
The right side label of a NaturalCure Labs Clean L-Lysine bottle, displaying the supplement facts including serving size, L-Lysine HCI amount, suggested use, and a note on vegetarian ingredients, with contact information for the St. Petersburg, FL manufacturer.
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
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Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
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Money-Back Guarantee

60-day refund or replacement

Works really well!

"I was looking for an ultra-pure option but hate tablets, and this one is great! It doesn't have added fillers, just the ingredients what I need."

- Tapeck

Verified Buyer
A close-up image of a NaturalCure Labs Clean L-Lysine bottle, showing the front label with 600mg dosage, key benefits for immune support, and 120 capsules count, emphasizing the product's premium, non-GMO, and gluten-free attributes.
The right side label of a NaturalCure Labs Clean L-Lysine bottle, displaying the supplement facts including serving size, L-Lysine HCI amount, suggested use, and a note on vegetarian ingredients, with contact information for the St. Petersburg, FL manufacturer.
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Video Thumbnail
Clean L-Lysine 600mg
Clean L-Lysine 600mg
A close-up image of a NaturalCure Labs Clean L-Lysine bottle, showing the front label with 600mg dosage, key benefits for immune support, and 120 capsules count, emphasizing the product's premium, non-GMO, and gluten-free attributes.
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Clean L-Lysine 600mg
Video Thumbnail

Clean L-Lysine 600mg

 Ultra-pure, high-quality L-Lysine—formulated without fillers or additives.

2,500+ Verified Reviews

  • Clean & Effective: 600mg of pure L-Lysine per capsule - the cleanest formula available

  • Made to Work: Trusted by 100,000 customers and supported by 5,000 reviews

  • Safety & Quality: Made in USA*, GMP certified, and 3rd Party Lab Tested
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On US orders over $30

Money-Back Guarantee

60-day refund or replacement

Works really well!

"I was looking for an ultra-pure option but hate tablets, and this one is great! It doesn't have added fillers, just the ingredients what I need."

- Tapeck

Verified Buyer

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What is L-Lysine?

L-Lysine is one of the nine essential amino acids that the human body cannot produce on its own.

 

It's often noted for its potential in supporting the body’s natural defense mechanisms. 

 

Research suggests that Lysine supplementation can help with overall immune, skin, and muscle health.‡

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Take Control. Get Results

Immune Support‡

L-Lysine is an essential amino acid that helps support a healthy immune response and contributes to overall wellness.‡

Skin Health‡

Supports collagen production and skin structure, contributing to the maintenance of healthy-looking skin.‡

Muscle Recovery‡

Assists in protein synthesis and tissue repair, making it a valuable part of any recovery or active wellness routine.‡

Award-Winning Quality Since 2015 🏆

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Industry Awards

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Reviews

21M+

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Designed to Work

Our  L-Lysine is free of synthetic additives and always lab-tested. It's vegan, gluten-free, and non-GMO. We're committed to the highest standards of quality and safety, earning us industry recognition year after year.

Take one capsule 1-3 times daily with food, or as directed by a healthcare professional.

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Why choose Natural Cure Labs?

Natural Cure Labs

 120 full servings per bottle

 Capsule form – easy to swallow

Made in the USA*

Award-Winning company

Plant-based

No synthetic fillers

Vegan, non-gmo and gluten free

Others

Fewer capsules, lower value

 Often tablets – large or chalky

Unknown origin

Untrusted

Animal-derived or synthetic sources

Contains synthetic fillers

Not certified

Money-Back Guarantee

If you are not 100% satisfied with your purchase, then you may return your order for a refund with no questions asked.

 

With 5,000+ public reviews, our promise is to deliver the highest levels of value, quality, and personal service available. Your satisfaction is our priority. 

Frequently Asked Questions

How should I take Clean L-Lysine?

We recommend taking 1 - 3 capsules daily with food, or as directed by your healthcare professional. For general wellness or immune support, one capsule (600 mg) per day is a common serving. If you have increased needs (for example, some people choose 2 capsules daily during certain times), you can do so, but it’s best not to exceed the recommended dosage on the label without consulting a healthcare provider. Swallow the capsule with water; taking it with a meal or light snack can help absorption and comfort.

What are the ingredients?

The active ingredient is L-Lysine HCl (600 mg) per capsule. Other ingredients are kept to a bare minimum to maintain a clean formula – we use a vegetable cellulose capsule and a small amount of natural rice powder to fill the capsule. No artificial fillers, no magnesium stearate, no silicon dioxide, and no preservatives are used. You’re essentially getting just the pure amino acid lysine in a natural, clean delivery form.

Is it vegan/Non-GMO/Gluten-free?

Yes. Clean L-Lysine is formulated to be vegan, non-GMO, and gluten-free. The lysine is naturally sourced (vegetarian origin) and our capsules are plant-based. We ensure there are no animal-derived components in the product. It also contains no gluten, no soy, no dairy, and no genetically modified ingredients. This supplement is suitable for people with many dietary restrictions or those who simply prefer a very clean, allergen-free supplement.

How long does a bottle last?

Each bottle contains 120 capsules of L-lysine. If you take one capsule per day, the bottle will last 120 days (about four months). Even if you occasionally take two capsules in a day, you still have roughly a two-month supply or more. This generous capsule count makes it convenient and cost-effective, especially for daily long-term use.

Where is it made?

Our Clean L-Lysine is made in the USA*, in a facility that follows Good Manufacturing Practices (GMP). We formulate, blend, and bottle the product domestically to ensure top quality. Every step from sourcing the lysine to encapsulation is done under strict quality oversight in the USA.

Are there any side effects?

L-lysine is generally very safe and is actually present in many foods we eat. At typical supplement doses, no significant side effects are expected. Most people tolerate lysine without any issues. If you have any concerns or experience adverse effects, please discontinue use and consult your healthcare provider.

Can I take L-Lysine with other supplements or medications?

L-Lysine can typically be taken with other supplements, like Monolaurin, Premium Immune Support, Andrographis or Biofilm. It’s important to consult your healthcare provider, especially if you’re on prescription medication or have any underlying health conditions.

How long will it take to see results?

The time frame for seeing results varies depending on individual health and consistency of use. Some users report noticeable benefits within a few weeks, while others may take longer to experience the full effects.

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Customer Reviews
5.0 Based on 43 Reviews
5 ★
95% 
41
4 ★
5% 
2
3 ★
0% 
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2 ★
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1 ★
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Customer Photos
Clean L-Lysine 600mg - Customer Photo From Amandai
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Filter Reviews:
RB
02/27/2025
Rochelle B.
United States

Great product!

Finding Natural **** Labs Clean L-Lysine has been a game changer! Longtime customer and would recommend to anyone who is looking to boost their immune system. Thanks~

  • Age 35-54
  • Health Goals Immune System
  • Dietary Considerations
  • Other Supplements Taken MonolaurinImmune Support MultivitaminAndrographisL-Lysine
  • Duration of Use 6+ months
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Was this helpful?  0    0
K
02/22/2025
Karine SVG verified by SHOP
Australia

Great product, keeps my immune system strong.

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Was this helpful?  1    0
RB
02/10/2025
Rochelle B.
United States

Great product!

Have been taking Lysine for over 3 years now and it definitely has helped boost my immune system in my opinion.

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Was this helpful?  0    0
G
01/07/2025
George SVG verified by SHOP
United States

Helpful and easy to take

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Was this helpful?  0    0
KM
11/09/2024
Karen m.
United States

RT

Very good I find it very helpful to me

  • Age 35-54
  • Health Goals DigestionImmune SystemSkin / HairEnergy / StaminaMetabolism
  • Dietary Considerations VeganOrganicGluten FreeDairy FreeSugar FreeNon-GMO
  • Other Supplements Taken MonolaurinBiofilm ComplexAndrographisL-Lysine
  • Duration of Use 6+ months
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Was this helpful?  0    0
JW
11/03/2024
Jocelyn W.
United States

N/A

It was ok Look forward for more soon

  • Age (Optional) 35-54
  • Health Goals (Optional) Immune System
  • Dietary Considerations (Optional)
  • Other Supplements Taken (Optional)
  • Duration of Use (Optional) Less than 1 month
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Was this helpful?  0    0
LE
10/24/2024
Levine E.
United States

So far so good

I just started taking them so not sure but I'm hoping for good results

  • Age 35-54
  • Health Goals Immune System
  • Dietary Considerations Organic
  • Other Supplements Taken Monolaurin
  • Duration of Use Less than 1 month
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Was this helpful?  0    1

‡ These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

* With global materials
A close-up image of a NaturalCure Labs Clean L-Lysine bottle, showing the front label with 600mg dosage, key benefits for immune support, and 120 capsules count, emphasizing the product's premium, non-GMO, and gluten-free attributes.
$17.95
$18.95
- 5% off