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L-Lysine 1000 mg

KAL
4.8
★ ★ ★ ★ ★
(145 ratings)
Lysine 1000 mg
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Score82
A clearly dosed lysine-only option that suits targeted amino-acid use. The 1000 mg amount is meaningful, while the formula offers little support beyond lysine.
How scoring works
Quantity:100 Tablet(s) • (100 servings)
Goals:
Hair Health

Score 82

A clearly dosed lysine-only option that suits targeted amino-acid use. The 1000 mg amount is meaningful, while the formula offers little support beyond lysine.
How scoring works
$16.39($0.16 per serving)
iHerb
$ 16.39
Vitacost
$ 16.39
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Analysis

Lysine contributes to structural proteins and may be most useful for hair when protein intake or iron status is inadequate. The 1000 mg serving provides a substantial targeted amount in a stable, commonly used form.

One tablet supplies the listed serving, keeping daily use simple. The lysine form and amount are disclosed, but no higher purity grade, source, or independent verification is provided.

The single-ingredient design does not cover mineral, antioxidant, scalp, or hormone-related contributors to hair concerns. It fits targeted supplementation better than someone seeking a complete hair or general wellness formula.

Who is it for
  • Adults seeking a focused lysine supplement
  • People who prefer a premeasured tablet or capsule
  • Users addressing a possible dietary lysine shortfall
Best for
  • Targeted lysine intake
  • Nutritional support when protein or iron status may be inadequate
  • Simple daily supplementation

Pros

  • Clearly identifies 1000 mg of lysine per serving
  • Uses l-lysine hydrochloride
  • One-unit serving is easy to follow
  • Focused formula avoids unrelated active ingredients

Cons

  • Single-ingredient design limits broader nutrient coverage
  • No purity grade or sourcing details are supplied
  • No complementary hair or immune nutrients are included
  • Hair relevance is strongest when a nutritional shortfall is present

Warnings

  • The 1000 mg lysine serving may cause stomach discomfort in sensitive users, especially if taken without food.
  • People with significant kidney disease should discuss standalone amino-acid supplementation with their clinician before use.
  • Persistent or sudden hair shedding can have causes that a lysine-only supplement does not address.

Nutrient quality

93 Highest impact

L-lysine hydrochloride provides a stable and well-absorbed amino-acid form. The 1000 mg amount is meaningful for focused lysine supplementation.

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Ingredient transparency

82 Highest impact

The lysine form and amount are clearly stated without a proprietary blend. Missing excipient details and complete use directions leave the supplied label information incomplete.

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Customer satisfaction

64 Moderate impact

The supplied aggregate satisfaction average is favorable, while the response volume determines how stable it appears. No comment-level evidence is available to assess repeated complaints or confirm intended-use experiences.

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Value for money

87 Highest impact

The focused dose provides reasonable serving value. The supplied active formula is focused and shows no low-value padding.

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Goals

Hair Health
Impact
High effect
C+ Goal FitA Strength of SupportD+ CoverageA Formula Quality
Lysine · 1000 mg

L-lysine may support hair by contributing to protein synthesis and helping iron utilization, especially when dietary intake is low. It does not provide collagen, iron, or other nutrients needed for broader hair support.

The hydrochloride form and exact one-gram amount are clearly disclosed and provide a meaningful dose. The focused design makes it easy to assess, although direct evidence for hair outcomes remains limited.

Study evidence
Lysine Supportive 1 study

Ingredients

IngredientAmount per serving
Calories
5 Calorie(s)
L-Lysine (L-Lysine Hydrochloride)
1000 mg
Adults 18–50 Vegetarian
Report overview
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

One tablet provides a useful amount of lysine in the established hydrochloride form. Daily use is convenient, but the label does not identify a higher purity grade or special sourcing standard. Value is good, though less favorable than the lowest-cost single-ingredient options.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Causes of hair loss and the developments in hair rejuvenation.
    Rushton DH; Norris MJ; Dover R; Busuttil N · International journal of cosmetic science · 2010
    Narrative reviewHair Health forLysine