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L-Lysine

Pure Encapsulations
4.8
★ ★ ★ ★ ★
(184 ratings)
Lysine 500 mg
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Score83
500 mg of l-lysine hydrochloride anchors a strong single-ingredient option with strong value. Its main trade-off is the high dose, which may be either convenient or restrictive depending on the intended routine.
How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Hair Health

Score 83

500 mg of l-lysine hydrochloride anchors a strong single-ingredient option with strong value. Its main trade-off is the high dose, which may be either convenient or restrictive depending on the intended routine.
How scoring works
$15.50($0.17 per serving)
Pure Formulas
$ 15.50
Vitacost
$ 15.50
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Analysis

The 500 mg serving provides l-lysine hydrochloride as the main active in capsule(s). The amount gives the product a high-dose profile without adding unrelated actives.

The amount is stated, but the supplied information leaves some formulation detail unspecified. Value is favorable for the supplied amount and serving count, and the focused formula makes comparison with similar products easier.

The strongest practical fit is hair health, with related assessments also supporting lysine-focused use. The main decision is whether 500 mg and the capsule(s) format match the user's preferred routine and budget.

Who is it for
  • Adults seeking a high-dose Lysine supplement
  • People who prefer capsule(s) for l-lysine hydrochloride
  • Users focused on hair health
Best for
  • Hair Health support

Pros

  • Clearly stated 500 mg amount
  • Focused l-lysine hydrochloride formula
  • Serving amount is easy to identify
  • Favorable value for the supplied quantity

Cons

  • 500 mg offers little flexibility for lower-dose use
  • Capsule(s) may not suit every user's format preference
  • Single-active formula provides no complementary nutrients

Nutrient quality

87 Highest impact

Ingredient forms and dosing are well aligned with the intended use. The focused formula avoids obvious excesses and low-value additions.

Ingredient transparency

85 Highest impact

Most active amounts are disclosed and core ingredients are identifiable. Missing serving, blend, or excipient details keep the label from being fully transparent.

Customer satisfaction

71 High impact

The aggregate rating is strong and supported by a useful volume of ratings. Specific feedback was not supplied, so recurring complaints and purpose fit remain uncertain.

Value for money

86 Highest impact

Formula quality provides reasonable value for a useful serving. Minor disclosure, dosing, or category trade-offs keep the value from being exceptional.

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Goals

Hair Health
Hair Health
Impact
Highest effect
B- Goal FitA+ Strength of SupportC+ CoverageA+ Formula Quality
Lysine · 500 mg

L-lysine supplies an essential amino acid used in collagen production and may support iron uptake when low ferritin contributes to shedding. Direct hair-growth evidence is more limited than the established nutritional role suggests.

One capsule provides a meaningful 500 mg amount in a well-absorbed hydrochloride form. The focused formula offers strong depth for lysine but does not supply iron, zinc, or other structural amino acids.

Study evidence
Lysine Supportive 1 study

Ingredients

IngredientAmount per serving
L-Lysine Hydrochloride
500 mg
Gluten Free Adults 18–50
Report overview
Lysine · 500 mg OverallScore75
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyC Value

L-lysine hydrochloride supplies a standard, highly absorbable form at an effective 500 mg dose. One capsule provides the full amount with minimal serving burden. The active-dose cost is fair, while missing additive and purity claims leave some label uncertainty.

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Loading alternative details
86 Performance

L-Lysine 500 mg

Carlson
A clearly stated L-lysine hydrochloride dose at 500 mg provides a focused source of this essential amino acid. The provided quality and goal assessments are stronger than the original, although the provided data do not include independent testing or certification details.
86 Performance

L-Lysine 500 mg

Source Naturals
A clearly stated L-lysine hydrochloride dose at 500 mg provides a focused source of this essential amino acid. The provided quality and goal assessments are stronger than the original, although the provided data do not include independent testing or certification details.
85 Performance

Free-Form Lysine 500 mg

Swanson
A clearly stated L-lysine hydrochloride dose at 500 mg provides a focused source of this essential amino acid. The provided quality and goal assessments are stronger than the original, although the provided data do not include independent testing or certification details.
86 Budget

L-Lysine 1000 mg

AN Amazing Nutrition Amazing Formulas
A clearly stated L-lysine hydrochloride dose at 1000 mg provides a focused source of this essential amino acid. Its lower serving cost improves routine value compared with the original, although the provided data do not include independent testing or certification details.
86 Budget

L-Lysine Powder 960 mg

Carlson
A clearly stated L-lysine hydrochloride dose at 960 mg provides a focused source of this essential amino acid. Its lower serving cost improves routine value compared with the original, although the provided data do not include independent testing or certification details.
86 Budget

L-Lysine 1000 mg

Solgar
A clearly stated L-lysine hydrochloride dose at 1000 mg provides a focused source of this essential amino acid. Its lower serving cost improves routine value compared with the original, although the provided data do not include independent testing or certification details.
84 Value

L-Lysine 600 mg

21st Century
A clearly stated L-lysine hydrochloride dose at 600 mg provides a focused source of this essential amino acid. Strong provided quality and goal assessments combine with favorable serving economics, improving the balance of formulation and value; the small calcium addition makes the formula slightly less minimal.
85 Value

L-Lysine Pharmaceutical Grade

Swanson
A clearly stated L-lysine hydrochloride dose at 500 mg provides a focused source of this essential amino acid. Strong provided quality and goal assessments combine with favorable serving economics, improving the balance of formulation and value; the provided data do not include independent testing or certification details.
86 Value

L-Lysine 500 mg

NOW
A clearly stated L-lysine hydrochloride dose at 500 mg provides a focused source of this essential amino acid. Strong provided quality and goal assessments combine with favorable serving economics, improving the balance of formulation and value; the provided data do not include independent testing or certification details.
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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