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L-Arginine 500 mg

Swanson Premium Brand
4.7
★ ★ ★ ★ ★
(8591 ratings)
Arginine 500 mg
Product Image
Score79
A basic low-dose capsule offers good value and clear labeling. Several servings are needed for meaningful dose depth.
How scoring works
Quantity:100 Capsule(s) • (100 servings)
Goals:

Score 79

A basic low-dose capsule offers good value and clear labeling. Several servings are needed for meaningful dose depth.
How scoring works

Also available as

3 options
200 servings Arginine 500 mg • 200 Capsule(s) • 200 servings $14.29 ($0.07 per serving) 850mg • 90 Capsule(s) servings Arginine 850 mg • 90 Capsule(s) • 90 servings $8.49 ($0.09 per serving) 60 servings Arginine 500 mg • 60 Capsule(s) • 60 servings $11.09 ($0.18 per serving)
$10.79($0.10 per serving)
iHerb
$ 10.79
Amazon
$ 0.00
iHerb
$ 10.79
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Analysis

One capsule provides 500 mg of clearly labeled L-arginine, keeping the formula simple and easy to understand. L-arginine is a nitric-oxide precursor, so it may support blood-vessel relaxation and circulation without acting as a stimulant.

The serving is modest for circulation or fitness use, and immediate-release delivery offers no persistence advantage. Strong cost efficiency suits budget-focused users who accept taking multiple capsules for a larger intake.

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

  • Straightforward single-active formula
  • Good cost efficiency
  • Convenient one-capsule serving

Cons

  • Low amount for targeted support
  • No sustained-release feature
  • Larger intake requires repeated servings

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

76 High impact

Standard L-arginine is clearly named but lacks source, grade, or release detail. The amount is low for targeted circulation or fitness use.

Ingredient transparency

78 High impact

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

Customer satisfaction

73 High impact

The supplied average rating is strong. The large rating sample provides strong statistical confidence.

Value for money

89 Highest impact

The focused formula is clean, but low dose limits quality depth. The very low serving cost provides strong basic value.

Report analysis

Ingredients

IngredientAmount per serving
L-Arginine
500 mg
Adults 18–50
Report overview
Arginine · 500 mg OverallScore59
C+ Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyB+ Value

Clearly labeled L-arginine provides straightforward ingredient disclosure, though the 500 mg serving is low for circulation or fitness use. A larger intake requires several capsules and repeated servings. The bottle offers good cost efficiency despite its basic immediate-release format.

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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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