L-Lysine 500 mg®

Amino Acids & Protein

Brand: NOW

CapsuleAmino acid/ProteinOn Market
Click to view full label

Net Contents

250 Veg Capsule(s)

Serving Size

1 Veg Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 33739 00112 2

Product Version

CODE 0112C V5

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

3Dietary Attributes

Label states: Non-GMO, Gluten-Free, Kosher.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Supplement Facts

Serving Size: 1 Veg Capsule(s) · 1–3 per day

IngredientAmount Per Serving
L-Lysine(L-Lysine Hydrochloride)500 mg

Not Present

Other Ingredients

HypromelloseStearic AcidMicrocrystalline CelluloseRice Flour

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Usage: Take 1 tablet 1 to 3 times daily.

Warnings & Precautions

Precautions re: All Other

Caution: For adults only.

Precautions re: Pregnant or Nursing or Prescription Medications

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Precautions re: Children

Keep out of reach of children.

Precautions re: Allergies

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Storage

Storage

Store in a cool, dry place after opening.

Formulation

Formulation re: Other

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. Lysine is also a precursor to carnitine, which is needed for fat metabolism and energy production. In addition, Lysine may help to support a healthy immune system and proper cardiovascular function.

Formula re: Contains

Essential Amino Acid

Formulation re: Other

Supports Collagen Synthesis Healthy Immune Function

Formulation re: Does NOT Contain

Non-GMO

Formula re: Kosher

Triangle K (Kosher)

Formulation re: Does NOT Contain

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

FDA Statements

FDA Disclaimer Statement

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.

FDA Statement of Identity

A Dietary Supplement

Other Label Statements

General Statements: All Other Content

Natural color variation may occur in this product

Seals/Symbols

Triangle K (Kosher)

General Statements: All Other Content

Amino Acids Family owned since 1968.

Brand IP Statement(s) re: (c), (TM), (SM)

NOW L-Lysine is a Pharmaceutical Grade essential amino acid.

Seals/Symbols

GMP Quality Assured

Manufacturer & Distributor

Manufacturer

NOW FOODS

395 S. Glen Ellyn Rd., Bloomingdale, IL, 60108

Market Reference

$6.88 – $104.99· 40 listings
  • L-Lysine 500 mg NOW

    Hebron Nutrition4.8(7300)
    $13.78
  • NOW L-Lysine

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    $9.99
  • NOW L-Lysine 500 mg 250 Kapseln

    personalpower
    $8.99
  • (2 pack) NOW Supplements, L-Lysine (L-Lysine Hydrochloride) Powder, Supports Collagen Synthesis*, Amino Acid, 1-Pound, White

    Walmart - Fruitful Yield5.0(12)
    $33.18
  • Now Lysine - 500 Mg

    townandcountrymarkets.com4.8(7300)
    $20.49
  • Now Foods L-Lysine Powder

    iHerb4.9(1900)
    $15.92
  • Now Foods Double Strength L-Lysine 500mg 250 Vegan Tablets

    GoSupps.com5.0(1)
    $59.99
  • Nutricost L-Lysine

    Target4.5(385)
    $21.95

Where to Buy Locally

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Research & Studies

  • The metabolic roles, pharmacology, and toxicology of lysine.

    NW Flodin - Journal of the American College of Nutrition, 1997 - Taylor & Francis

    … L-Lysine was introduced in the United States on a small … lysine supplements and their use without medical supervision… Many physicians are now placing PD patients on high…

    1997198 citations
  • Lysine: Sources, Metabolism, Physiological Importance, and Use as a Supplement

    M Holeček - International Journal of Molecular Sciences, 2025 - mdpi.com

    … Potential medical applications of the phenomenon of lysine–… Up to now, no studies have evaluated the effect of removing … and the potential usefulness of L-lysine supplements for both …

    202517 citations
  • Lysine Hydrochloride: Summary Report

    MV Yuen, SL Gianturco, LL Pavlech, KD Storm… - 2020 - archive.hshsl.umaryland.edu

    … review, ten (10) medical specialties that would potentially use … Effect of dietary supplementation with L-lysine in poorly … L-lysine as adjunctive treatment in patients with schizophrenia: …

    2020
  • Safety assessment of L-lysine oral intake: a systematic review

    K Hayamizu, I Oshima, Z Fukuda, Y Kuramochi… - Amino …, 2019 - search.proquest.com

    … in dietary supplements (Flodin 1997). In light of the wide use of l-lysine supplements and fortified … We evaluated specifically focusing on the safety of lysine supplements used by healthy …

    201931 citations
  • Lysine requirement through the human life cycle

    D Tomé, C Bos - The Journal of nutrition, 2007 - Elsevier

    … L-Lysine is a basic amino acid characterized by the presence of … L-Lysine hydrochloride is used for cereal fortification for … higher than that of healthy subjects and reaches 44 mg·kg −1 ·d …

    2007236 citations
  • Evaluation of the pharmaceutical quality of two nutraceutical lysine products in South Africa

    JT Chanyandura, NZ Nyazema - African Journal of Pharmacy …, 2022 - academicjournals.org

    … The range of dietary supplements now available on the South … of L-lysine indicated that there was 500 mg of L-lysine which … that supports good health and that it may assist to reduce the …

    2022

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-02-25. DSLD Label ID: 244388. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.