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L-Lysine 500 mg

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(1855 ratings)
Lysine 1000 mg
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Score82
A focused lysine option with a meaningful listed serving, but the strength conflict should be resolved before use. It is narrower than a complete hair or immune formula.
How scoring works
Quantity:90 Capsule(s) • (45 servings)
Goals:
Hair Health
Immunity

Score 82

A focused lysine option with a meaningful listed serving, but the strength conflict should be resolved before use. It is narrower than a complete hair or immune formula.
How scoring works
$9.07($0.20 per serving)
iHerb
$ 9.07
Amazon
$ 11.96
Vitacost
$ 9.07
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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.

The listed serving works out to two capsules, adding a little more daily effort than a one-unit serving. The product name says 500 mg while the supplied serving data list 1,000 mg, so the physical label should be checked before use.

Its immune relevance is narrow, and it does not supply the vitamins, minerals, or other nutrients used for broader immune coverage. 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
  • Narrow lysine-related immune use rather than broad daily immune support

Pros

  • Clearly identifies 1000 mg of lysine per serving
  • Uses l-lysine hydrochloride
  • Capsule format avoids measuring powder
  • Focused formula avoids unrelated active ingredients

Cons

  • Single-ingredient design limits broader nutrient coverage
  • Product name and supplied serving amount conflict
  • Full serving requires two capsules
  • Not designed for broad immune support

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.
  • Verify the serving strength on the physical label because the supplied name and ingredient amount do not match.

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

69 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.

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Value for money

80 High impact

The formula is simple, but serving economics are only moderately competitive. 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 provides a substantial keratin-building amino acid amount and may help when intake or iron status is inadequate. Direct hair benefits remain uncertain in otherwise well-nourished users.

The hydrochloride form and full serving amount are clearly disclosed. The focused formula offers meaningful structural support but does not address hormonal or scalp pathways.

Study evidence
Lysine Supportive 1 study
Immunity
Impact
High effect
C- Goal FitA Strength of SupportD CoverageA+ Formula Quality

L-lysine has a situational immune role for people prone to herpes simplex cold sores rather than broad daily immune support. The 1,000 mg amount fits the supplied collection target for that narrow use.

L-lysine hydrochloride is a stable and readily absorbed form with clear dosing. The product does not cover barrier, antioxidant, or general immune-cell nutrient needs.

Study evidence
Lysine Supportive 2 studies

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 & BioavailabilityB Dose, Safety & Label TransparencyB+ Value

L-Lysine hydrochloride supplies a well-absorbed form at a useful 1000 mg serving. Two capsules are needed, which is less convenient than a single-unit option but remains manageable. The label information does not confirm a premium purity grade or disclose the full excipient profile.

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Sources

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

  1. Lysine-fortified wheat flour improves the nutritional and immunological status of wheat-eating families in northern China.
    Zhao W; Zhai F; Zhang D; An Y; Liu Y; He Y; Ge K; Scrimshaw NS · Food and nutrition bulletin · 2004
    Clinical trial264 participantsImmunity forLysine
  2. 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
  3. Success of L-lysine therapy in frequently recurrent herpes simplex infection. Treatment and prophylaxis
    R S Griffith, D E Walsh, K H Myrmel, R W Thompson, A Behforooz · Dermatologica · 1987
    Non-randomized trial52 participantsImmunity forLysine