C/Lysine Plus®

Other Combinations

Brand: Douglas Laboratories

CapsuleOther CombinationsOn Market
Click to view full label

Net Contents

120 Vegetarian Capsule(s)

Serving Size

4 Vegetarian Capsule(s)

Servings Per Container

30

Supplement Form

Capsule

Bar Code (UPC/SKU)

3 10539 00339 8

Product Version

Formula #80279 V5

Label Analysis

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

2Active Ingredients

2 distinct active ingredients are disclosed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

1% Daily Value Coverage

1 ingredients report a %DV; 1 meet or exceed 100% DV.

2Dietary Attributes

Label states: Non-GMO, Gluten-Free.

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

Allergen Guide

Free From

  • Gluten

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Supplement Facts

Serving Size: 4 Vegetarian Capsule(s) · 1–2 per day

IngredientAmount Per Serving% Daily Value
Vitamin C(Ascorbic Acid)2000 mg2222%
L-Lysine Hydrochloride1000 mg

Not Present

Other Ingredients

Hydroxypropyl MethylcelluloseHydroxypropyl CelluloseAscorbyl PalmitateCitrus BioflavonoidsMicrocrystalline Cellulose

Target Groups

Adult (18 - 50 Years)Gluten Free

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Usage: Adults take 4 capsules 1-2 times daily or as directed by a health professional.

Warnings & Precautions

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.

Precautions re: Children

Keep out of the reach of children.

Precautions re: All Other

Use only if safety seal is intact.

Storage

Storage

Store in a cool, dry place.

Formulation

Formulation re: Does NOT Contain

Gluten-free, Non-GMO

Formulation re: Other

Connective tissue and collagen health

FDA Statements

FDA Disclaimer Statement

This statement has 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

Dietary Supplement

Other Label Statements

General Statements: All Other Content

Scan to learn about our manufacturing excellence Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity.

Manufacturer & Distributor

Manufacturer

Douglas Laboratories

600 Boyce Road, Pittsburgh, PA, 15205

1.800.245.4440

Market Reference

$6.85 – $73.82· 10 listings
  • Cold Sore Shield Daily Cold Sore Support Supplement

    Walmart4.5(47)
    $15.97
  • Douglas Laboratories C-Max 90 Tablets

    Natural Healthy Concepts4.4(7)
    $37.99
  • QUANTUM Super Lysine Plus 90 Tablets

    Whole Foods Market4.8(852)
    $6.85Lowest
  • Douglas Laboratories Hair, Skin and Nails Plus Formula 100 Capsules

    Covenant Health Products4.7(23)
    $39.00
  • Quantum Health Lip Clear Lysine Plus Cold Sore Treatment

    CVS Pharmacy4.5(928)
    $12.49
  • Quantum Health Quantum Super Lysine Plus Cold Sore Treatment

    William's Natural Foods4.6(763)
    $10.99
  • Pureway-C+Lysine

    Curated Wellness5.0(34)
    $34.97
  • Quantum Health Super Lysine Plus Tangerine Coldstick 5 Gram

    Silkrute5.0(4)
    $73.82

Where to Buy Locally

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Research & Studies

  • Cure Your Cancer: Your Guide to the Internet

    B Henderson - 2003 - books.google.com

    … he guides you every step of the way to vibrant health. When his former wife, Marjorie, died on … It encourages you to take charge of your health and gives you the guidance you need to do …

    20032 citations
  • l-Lysine supplementation affects dietary protein quality and growth and serum amino acid concentrations in rats

    CW Xiao, A Hendry, L Kenney, J Bertinato - Scientific Reports, 2023 - nature.com

    … The nutritional safety and health effects of supplemental Lys intake are not fully understood. In this study, using rats as a model, we examined, (a) the effects of Lys supplementation in …

    202328 citations
  • Effects of Branched–Chain Amino Acids on Nitrogen Metabolism in Patients With Cirrhosis

    FL Weber Jr, BS Bagby, L Licate, SG Kelsen - Hepatology, 1990 - journals.lww.com

    … Table 2 lists the composition of solution A and B as determined by Abbott Laboratories and confirmed by amino acid analysis in our laboratory. For solution B, most amino acid …

    199036 citations
  • Impact of enteral arginine supplementation on lysine metabolism in humans: a proof‐of‐concept for lysine‐related inborn errors of metabolism

    Z Schmidt, G Murthy, M Ennis… - Journal of Inherited …, 2020 - Wiley Online Library

    … Oxidation of 13 C-Lysine decreased … and supplements used for medical purposes are available as purified l-arginine product on prescription. Arginine as a nutritional supplement is …

    202031 citations
  • The impact of soybean derived trypsin inhibitor proteins and soybean hulls on nursery and grow-finish pig nutrient digestibility, growth performance, and carcass …

    KA Miller - 2025 - search.proquest.com

    … that antinutritional protease inhibitor proteins are innate in soybean ingredients, the specific activity of these proteins in the complete feed that attenuates pig performance and health is …

    2025
  • Vitamin E, Heart Disease and Tocotrienols

    J Dach - jeffreydachmd.com

    … These supplements can be obtained at any the health food store as tablets or capsules for 40 to 50 dollars a month. A convenient powder form can be obtained at Tower Laboratories. …

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-08-23. DSLD Label ID: 232242. 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.