Product Image

L-Lysine 600 mg

21st Century
4.7
★ ★ ★ ★ ★
(1176 ratings)
Lysine 600 mg
Product Image
Score84
A clearly dosed lysine-only option that suits targeted amino-acid use. The 600 mg amount is moderate, while the formula offers little support beyond lysine.
How scoring works
Quantity:90 Tablet(s) • (90 servings)
Goals:
Hair Health

Score 84

A clearly dosed lysine-only option that suits targeted amino-acid use. The 600 mg amount is moderate, while the formula offers little support beyond lysine.
How scoring works
$4.46($0.04 per serving)
iHerb
$ 4.46
Report prices

Analysis

Lysine contributes to structural proteins and may be most useful for hair when protein intake or iron status is inadequate. The 600 mg serving provides the lower edge of a useful targeted range 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 600 mg of lysine per serving
  • Uses hydrochloride form
  • One-unit serving is easy to follow
  • Supplies a large amount of lysine relative to the container size

Cons

  • The amount sits at the lower end of focused supplementation
  • 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 600 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

90 Highest impact

L-lysine hydrochloride provides a stable and well-absorbed amino-acid form. The 600 mg amount is meaningful for focused lysine supplementation.

.

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.

.

Customer satisfaction

68 High 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.

.

Value for money

96 Highest impact

The focused dose and simple formula support favorable serving value. A very small calcium addition provides little value beside the focused lysine dose.

.
Report analysis

Goals

Hair Health
Impact
High effect
B Goal FitA Strength of SupportC- CoverageA- Formula Quality
Lysine · 600 mg

L-lysine supplies an essential amino acid that supports collagen formation and may assist iron absorption. The disclosed hydrochloride form and meaningful amount make it a credible focused contribution.

The formula does not directly supply iron, zinc, sulfur-rich amino acids, or hormonal support, so coverage remains narrow. Its greatest relevance may be alongside an identified iron shortfall rather than as a complete hair formula.

Study evidence
Lysine Supportive 1 study

Ingredients

IngredientAmount per serving
Calcium (Calcium Carbonate)
30 mg
L-Lysine Hydrochloride
600 mg
Gluten Free Adults 18–50
Report overview
Lysine · 600 mg OverallScore85
B- Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA+ Value

L-lysine hydrochloride provides an effective collection-aligned amount in one tablet. The disclosed form is strong, although grade, sourcing, and excipient details are absent. Excellent dose efficiency makes it a practical focused lysine option.

Loading alternative details
Report alternatives

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