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L-Arginine Caps 500 mg

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4.7
★ ★ ★ ★ ★
(274 ratings)
Arginine 500 mg
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Score70
Vitamin B6 adds a compatible cofactor, but the arginine amount remains light. Dose efficiency trails simpler options.
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Quantity:100 Capsule(s) • (100 servings)
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Score 70

Vitamin B6 adds a compatible cofactor, but the arginine amount remains light. Dose efficiency trails simpler options.
How scoring works
$16.79($0.16 per serving)
iHerb
$ 16.79
iHerb
$ 16.79
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Analysis

The serving combines 500 mg of L-arginine with 8.5 mg of vitamin B6, adding a relevant metabolic cofactor to a modest arginine amount. L-arginine is a nitric-oxide precursor, so it may support blood-vessel relaxation and circulation without acting as a stimulant.

A single capsule is easy to use, but vitamin B6 does not improve arginine dose depth or provide sustained release. The combination fits users who want both ingredients together, while simpler higher-arginine formulas offer better efficiency for circulation support.

The formula fits adults who want focused arginine support and can adjust intake to the stated serving size. L-arginine may add to the blood-pressure-lowering effects of nitrates or antihypertensive medicines, increasing the chance of dizziness or an excessive pressure drop.

Who is it for
  • Adults seeking focused circulation support
  • Users who prefer a clearly measured arginine serving
  • People comfortable adjusting intake to their needs
Best for
  • Nitric-oxide precursor support
  • General circulation support
  • Flexible amino-acid supplementation

Pros

  • Adds vitamin B6 as a metabolic cofactor
  • Convenient one-capsule serving
  • Clear active amounts

Cons

  • Arginine amount is low for targeted use
  • Vitamin B6 does not enhance release
  • Weaker dose efficiency than simpler formulas

Warnings

  • L-arginine may add to the blood-pressure-lowering effects of nitrates or antihypertensive medicines, increasing the chance of dizziness or an excessive pressure drop.

Nutrient quality

69 High impact

Pyridoxine hydrochloride is identified, while L-arginine lacks premium source or release detail. The arginine amount is low for circulation or performance use.

Ingredient transparency

80 High impact

Every listed active ingredient has a specific disclosed amount. Non-active ingredients and excipients are not provided.

Customer satisfaction

67 High impact

The supplied average rating is strong. The moderate rating sample provides reasonable statistical confidence.

Value for money

61 Moderate impact

The transparent formula is easy to assess, but low arginine depth limits quality. The serving cost is only moderate compared with simpler arginine options.

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Ingredients

IngredientAmount per serving
Vitamin B6 (Pyridoxine Hydrochloride)
 8.5 mg
L-Arginine
500 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
Arginine · 500 mg OverallScore53
C+ Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyD+ Value

The formula clearly discloses L-arginine, but its 500 mg serving is modest for circulation or performance goals. Added vitamin B6 does not raise the arginine dose or improve its release pattern. Cost efficiency is only moderate compared with simpler arginine options.

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85 Performance

L-Arginine Pure Powder

Best Naturals
<p>Ingredient form, amount, and goal fit make the option a stronger quality-focused alternative to the original. L-arginine is clearly identified, though no premium source or processing detail is supplied.</p>
80 Performance

L-Arginine 3000 mg

Natrol
<p>Ingredient form, amount, and goal fit make the option a stronger quality-focused alternative to the original. A performance-focused arginine amount provides substantial nitric-oxide pathway depth, with B vitamins adding a secondary metabolic role.</p>
73 Performance

Nitri Oxide Support

Pure Encapsulations
<p>Ingredient form, amount, and goal fit make the option a stronger quality-focused alternative to the original. A substantial arginine alpha-ketoglutarate (AAKG) amount and vitamin C provide a coherent exercise-circulation base.</p>
81 Budget

L-Arginine 500 mg

Best Naturals
<p>A lower serving cost makes the alternative an economical way to keep L-arginine central. L-arginine hydrochloride is a clear, soluble standard form.</p>
80 Budget

L-Arginine 700 mg

NOW
<p>Lower per-serving cost improves value while preserving an L-arginine-focused formula. A convenient capsule provides an intermediate arginine amount with excellent serving value.</p>
80 Budget

L-Arginine 500 mg

Swanson
<p>Value is stronger on cost because the option still centers on L-arginine. A focused one-capsule formula provides basic L-arginine with a large supply.</p>
84 Value

Arginine 1000 mg

Jarrow Formulas
<p>The balance of formula quality and serving economics is more favorable than the original. L-arginine hydrochloride is a clear, soluble standard form.</p>
83 Value

L-Arginine 1000 mg

21st Century
<p>The balance of formula quality and serving economics is more favorable than the original. A clearly identified hydrochloride form provides a moderate amount in one convenient tablet.</p>
74 Value

Wellness ImmuNitric

Source Naturals
<p>The balance of formula quality and serving economics is more favorable than the original. A substantial arginine amount with modest citrulline and B-vitamin support creates a coherent vascular formula at favorable value.</p>
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