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  • 2 VIDEOS
NOW performs 31,000 quality tests every monthPuresource Inc.
  • NOW Supplements, L-Lysine (L-Lysine Monohydrochloride) 500 mg, Amino Acid, 100 Veg Capsules
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NOW Supplements, L-Lysine (L-Lysine Monohydrochloride) 500 mg, Amino Acid, 100 Veg Capsules

4.4 out of 5 stars 323 ratings
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Purchase options and add-ons

Brand NOW
Flavour Unflavored
Primary supplement type L-Lysine
Unit count 100 Count
Item form Capsule
Item weight 100 Grams
Item dimensions L x W x H 8 x 4 x 6 Centimetres
Special ingredients Amino Acid
Product benefits Energy Management
Age range (description) Adult

About this item

  • SUPPORTS COLLAGEN SYNTHESIS*: Necessary for the production of all proteins in the body and is required for the maintenance of the structural proteins collagen and elastin*
  • HEALTHY IMMUNE FUNCTION*: May help to support a healthy immune system and proper cardiovascular function*
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Halal
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • FAMILY OWNED & OPERATED: Proudly packaged in Canada by a family owned and operated company.
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Videos for similar products

Previous page

  1. Vimergy L-Lysine – Promotes Healthy Skin, Hair, Nails & Joints* – Supports Healthy Metabolism* – Vegan, Non-GMO & Gluten-Free – 90 Capsules906
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  3. NOW Sports, L-Arginine & L-Ornithine 500/250 mg, Amino Acids, 100 Veg Capsules107
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  4. RENEW ACTIVES L-Lysine 3000mg per Serving 3 Tablets with Zinc & Vitamin C – Supports Immune Function, Collagen Formation, Antioxidant Support, Healthy Skin, Hair, & Nails – Made in Canada – 60 Tablets171
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  5. L Lysine 1000mg Free Form - High Strength L-Lysine Supplement for Eye Health Lip Care Collagen Synthesis and Immune Support - Essential Amino Acid Vegan Non-GMO 1000mg per Serving - 100 Tablets237
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  6. Pure Encapsulations - L-Lysine - Hypoallergenic Supplement Helps Maintain Healthy Arginine Levels and Immune Function - 90 Vegetable Capsules38
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  7. Vimergy L-Lysine – Promotes Healthy Skin, Hair, Nails & Joints* – Supports Healthy Metabolism* – Vegan, Non-GMO & Gluten-Free – 90 Capsules906
    $31.00

  8. L Lysine 1000mg Free Form - High Strength L-Lysine Supplement for Eye Health Lip Care Collagen Synthesis and Immune Support - Essential Amino Acid Vegan Non-GMO 1000mg per Serving - 100 Tablets237
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Important information

Safety Information

Consult a health care practitioner prior to use if you are pregnant or breastfeeding or following a low protein diet.

Ingredients

Each capsule contains: L-Lysine (L-Lysine Monohydrochloride) 500 mg. Non-Medicinal Ingredients: Capsule (gelatin, water), Stearic Acid (vegetable source), Cellulose, Magnesium Stearate (vegetable source), Rice Flour.

Directions

Adult Dosage: Take 2 capsules 1-3 times daily. Consult a health care practitioner for use beyond 6 months.

Legal Disclaimer

Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product.

Product description

L-Lysine is an essential amino acid that must be obtained through the diet or through supplementation. Lysine is necessary for the production of all proteins in the body, and is required for the maintenance of the structural proteins collagen and elastin, which form all connective tissue such as skin, tendon, and bone. L-Lysine is also a precursor to L-carnitine, which is needed for fat metabolism and energy production, which can support good health. In addition, L-Lysine supports a healthy immune system helping to fight cold sores. Capsule delivery provides faster, more complete absorption. Our NOW natural and organic Supplements are an effective way to ensure you and your loved ones are getting essential vitamins, minerals and nutrients for daily optimal health. Since 2000, the NOW brand has been supporting Canadians with a mission to provide products that empower people to lead healthier lives. 70% of the NOW products in Canada are made or packaged in Guelph, Ontario, employing hundreds of Canadians from coast to coast. NOW performs 31,000 quality tests every month to ensure you get the highest quality supplements at the best price possible. Our promise - what is on the label, is precisely what is in the bottle.

From the brand

Previous page

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    Natural at NOW means products are sustainable, plant-derived, and finished as close to nature as possible without harmful substances.

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  4. High-Quality Ingredients

    Strict quality requirements and scientific processes ensure that every ingredient accepted into our facilities meet our specifications.

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  6. Comprehensive Testing

    NOW's in-house laboratories test from raw ingredients to finished products to ensure that what’s on the label is in the bottle.

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  8. Superior Manufacturing

    NOW meets/exceeds FDA CGMPs, underscoring our commitment to quality. NOW was one of the first to be CGMP certified by a third-party.

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Product information

Technical Details

Manufacturer ‎NOW
Place of Business ‎NOW Canada Health Group, 5068 Whitelaw Road, RR6 Guelph, ON N1H 6J3
Item model number ‎L-Lysine 500mg 100cap
Product Dimensions ‎8 x 4 x 6 cm; 100 g
ASIN ‎B0040B7RDI

Additional Information

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NOW Supplements, L-Lysine (L-Lysine Monohydrochloride) 500 mg, Amino Acid, 100 Veg Capsules

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Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8 x 4 x 6 cm; 100 g
  • Date First Available ‏ : ‎ June 3 2014
  • Manufacturer ‏ : ‎ NOW
  • Place of Business ‏ : ‎ NOW Canada Health Group, 5068 Whitelaw Road, RR6 Guelph, ON N1H 6J3
  • ASIN ‏ : ‎ B0040B7RDI
  • Item model number ‏ : ‎ L-Lysine 500mg 100cap
  • Country of origin ‏ : ‎ Canada
  • 鶹 Rank: #5,159 in Health & Personal Care (See Top 100 in Health & Personal Care)
  • Customer Reviews:
    4.4 out of 5 stars 323 ratings

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Customer reviews

4.4 out of 5 stars
323 global ratings

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Customers say

Customers like the effectiveness and quality of the nutritional supplement. They mention it makes them feel better and helps prevent mouth sores. Some say it's worth a try and the pills are easy to swallow.

Select to learn more

EffectivenessQuality
13 customers mention "Effectiveness"13 positive0 negative

Customers like the effectiveness of the nutritional supplement. They mention it makes them feel better, helps support their immune system, and clears up cold sores fast. Some say it's worth a try and a great addition to supplements.

"It is good. I recommend" Read more

"I heard about this product recently. It Works! My appetite has diminished, no snacking etc. Follow the instructions" Read more

"...using these about 6 months ago and have noticed a huge difference in helping prevent mouth sores...." Read more

"I started taking these before bed and waking up in the morning my bloating is gone. My stomach seems way flatter after taking these regularly...." Read more

4 customers mention "Quality"4 positive0 negative

Customers are satisfied with the quality of the L-Lysin. They mention it's easy to swallow and proud of the amount of quality testing.

"Good quality L-Lysin, like it." Read more

"I work for this company and am proud of the amount of quality testing. I highly recommend this brand." Read more

"Excellent product" Read more

"Good product! The pills are very easy to swallow." Read more

Works keeping my mouth sore free
5 out of 5 stars
Works keeping my mouth sore free
I take every other day to keep any mouth and throat infections down and canker free. 500 mg Easy to swallow compared to 1000 mg
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Top reviews from Canada

  • RJ
    5.0 out of 5 stars It works
    Reviewed in Canada on April 28, 2025
    Verified Purchase
    I heard about this product recently. It Works! My appetite has diminished, no snacking etc. Follow the instructions
    One person found this helpful
    Helpful
     Report
  • Stella.K
    5.0 out of 5 stars Amazing for preventing mouth sores.
    Reviewed in Canada on February 28, 2025
    Verified Purchase
    Please note that I am not an expert but I got these because people recommended them for mouth sores or preventing them (for me it's before my period). I started using these about 6 months ago and have noticed a huge difference in helping prevent mouth sores. Even if I do get them from time to time they are a lot smaller and less painful than before.
    One person found this helpful
    Helpful
     Report
  • Tony W
    4.0 out of 5 stars L-Lysin great quality
    Reviewed in Canada on February 7, 2025
    Verified Purchase
    Good quality L-Lysin, like it.
    Helpful
     Report
  • Eric
    5.0 out of 5 stars Great price.
    Reviewed in Canada on July 14, 2025
    Verified Purchase
    Great price.
    Helpful
     Report
  • Mahra
    5.0 out of 5 stars Great addition to supplements
    Reviewed in Canada on March 31, 2025
    Verified Purchase
    Consistent use helps promote collagen. In addition to other supplements such as vitam.c
    One person found this helpful
    Helpful
     Report
  • Dave
    3.0 out of 5 stars Good
    Reviewed in Canada on February 18, 2024
    Verified Purchase
    Good
    Helpful
     Report
  • Alexandra P.
    5.0 out of 5 stars Cat essential
    Reviewed in Canada on November 9, 2024
    Verified Purchase
    These are part of my essentials in my cat pantry, a lot cheaper then the one branded for pets, I do about 1/2 caps per day for adult cats (can go up to a full capsule once a day) My cat was sneezing and caughing a bit (otherwise no behaviour change) gave him that on his food for about a week to be sure and it was gone (the symptoms diminished in like 2 days) my vet recommanded it and I saw a difference but I know some people say it doesn't do anything but I saw results!
    3 people found this helpful
    Helpful
     Report
  • Ethan
    5.0 out of 5 stars Bloating is gone!
    Reviewed in Canada on November 13, 2024
    Verified Purchase
    I started taking these before bed and waking up in the morning my bloating is gone. My stomach seems way flatter after taking these regularly. The pills have no bad after taste.
    6 people found this helpful
    Helpful
     Report

Disclaimer:While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read and follow labels, warnings, and directions before using or consuming a product. This product may not be right for you. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. 鶹.ca assumes no liability for inaccuracies or misstatements about products.