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Natures Craft L-Lysine 500 mg supplement bottle
Natures Craft

L-Lysine 500 mg Review

What We Researched
1 active ingredient analyzed · 6 inactive ingredients decoded · 2 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
75
Brand Score Fair

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Lysine (HCl) 1,000 mg **
Bioavailability Excellent

Absorption Rating

  • L-Lysine (HCl) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Vegetable Magnesium Stearate
  • Dicalcium Phosphate
  • Vegetable Stearic Acid
  • Aqueous film coating (purified water, hydroxypropyl methylcellulose and vegetable glycerin)
  • Croscarmellose sodium and silicon dioxide
Efficacy Excellent

Dosage Analysis

  • L-Lysine (HCl) 1,000 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Lysine (HCl) 1,000 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Vegetable Stearic Acid Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Aqueous film coating (purified water, hydroxypropyl methylcellulose and vegetable glycerin) Unknown
Croscarmellose sodium and silicon dioxide Unknown
Brand Trust Report
Natures Craft

Founded 2013 · St. Petersburg, FL, United States · 322 products · shopnaturescraft.com/

Certifications

2 certifications
NSF Contents Certified Supporting evidence unavailable
NSF Certified Supporting evidence unavailable

Transparency

3 claims
Third Party Testing Claim — True Brand claim; evidence unavailable
Testing Lab Disclosure — True Brand claim; evidence unavailable
Contains Proprietary Blend — True Brand claim; evidence unavailable
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Frequently Asked Questions
Is Natures Craft L-Lysine 500 mg a good supplement?

Natures Craft L-Lysine 500 mg received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 120 servings per container. Of the 6 inactive ingredients, 4 are rated safe and 0 ingredients are flagged for review. The manufacturer, Natures Craft, holds a brand trust score of 75/100.

What are the ingredients in Natures Craft L-Lysine 500 mg?

Natures Craft L-Lysine 500 mg contains 1 active ingredients: L-Lysine (HCl) (1,000 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natures Craft L-Lysine 500 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for Natures Craft L-Lysine 500 mg. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Natures Craft a trustworthy supplement brand?

Natures Craft receives a brand trust score of 75/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2013 and headquartered in St. Petersburg, FL, United States, the company offers 322 products in their lineup.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.