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L-Lysine 500 mg

Natural Factors
4.8
(1826 ratings)
Lysine 1000 mg
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Score92

A versatile high-dose lysine supplement that supports both hair strength and immune defense.

How scoring works
Quantity:90 Capsule(s)(45 servings)
Goals:
Immunity
Hair Health

Score 92

A versatile high-dose lysine supplement that supports both hair strength and immune defense.

How scoring works
$8.39($0.18 per serving)
iHerb
$ 9.07
Amazon
$ 9.07
Vitacost
$ 9.07
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Analysis

This supplement uses two capsules to deliver 1000mg of lysine hydrochloride. This dose is often used for managing hair resilience and supporting the body's natural defense against environmental challenges.

Because it comes in capsules, it is generally easier to digest than large tablets of the same strength. It focuses on high-quality building blocks for long-term wellness.

Pros

  • Supports both hair and immunity
  • High 1000mg serving size
  • Easier to digest capsule form

Cons

  • Requires taking two capsules daily
  • Fewer servings per bottle
  • Higher cost per day of use

Warnings

  • Consult a professional if taking for immune concerns.
  • Store in a cool place away from humidity.

Nutrient quality

92 Highest impact

The high 1000 mg dose offers substantial support for connective tissue and immune pathways. Utilization of the hydrochloride form ensures the nutrient is stable and well-absorbed for biological utility.

Ingredient transparency

97 Highest impact

The label clearly states the high active amount and all necessary supporting ingredients. Transparency is maintained through detailed serving instructions and the avoidance of proprietary mixtures.

Customer satisfaction

93 Highest impact

Customer ratings are strong, indicating high satisfaction with the product's performance across nearly two thousand reviews. Consistent positive feedback suggests it is a reliable and effective choice for users.

Value for money

83 Highest impact

While the price per serving is higher than some bulk options, the high dosage provides good nutritional value. Each capsule delivers a concentrated amount of the active nutrient for targeted support.

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Goals

Impact
Highest effect
B Goal FitA+ Strength of SupportC CoverageA- Formula Quality

This supplement delivers a concentrated 1000mg dose of L-Lysine Hydrochloride to support a healthy immune environment. L-Lysine is recognized for its role in modulating viral defense mechanisms and supporting the integrity of biological barriers.

While focused on specific immune challenges, the single-ingredient formula lacks the broad multi-nutrient coverage found in more comprehensive products. The form used is highly bioavailable and stable, ensuring focused support for those targeting amino acid status.

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Impact
Highest effect
A- Goal FitA+ Strength of SupportF CoverageA+ Formula Quality

L-lysine hydrochloride provides a potent 1000mg dose of this essential amino acid to support iron absorption and keratin synthesis. This concentration is ideally aligned with therapeutic goals for individuals addressing diffuse hair shedding.

Structural support and iron synergy are meaningfully addressed by this pure amino acid source. The high-quality hydrochloride salt ensures efficient uptake for follicular health and structural reinforcement.

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Ingredients

IngredientAmount per serving
L-Lysine (L-Lysine Hydrochloride)
1000 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
B+ Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyB+ Value
This high-potency supplement provides 1000 mg of lysine per serving, which is excellent for therapeutic support. While it requires two capsules per dose, it remains a reliable and pure option for health goals.
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