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L-Arginine 500 mg

Natural Factors
4.7
★ ★ ★ ★ ★
(2669 ratings)
Arginine 1000 mg
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Score83
A flexible two-capsule serving delivers a clearly named arginine form at good value. Users seeking larger amounts will still need additional capsules.
How scoring works
Quantity:180 Capsule(s) • (90 servings)
Goals:

Score 83

A flexible two-capsule serving delivers a clearly named arginine form at good value. Users seeking larger amounts will still need additional capsules.
How scoring works

Also available as

1 option
90 servings Arginine 1000 mg • 90 Capsule(s) • 45 servings $9.77 ($0.21 per serving)
$16.77($0.18 per serving)
Vitacost
$ 16.77
Amazon
$ 16.77
iHerb
$ 16.77
iHerb
$ 16.77
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Analysis

Two capsules provide 1,000 mg of clearly identified L-arginine hydrochloride, a moderate amount for everyday circulation support. L-arginine is a nitric-oxide precursor, so it may support blood-vessel relaxation and circulation without acting as a stimulant.

The capsule format permits a divided serving, although no sustained-release technology is stated. A 90-serving bottle combines useful flexibility with strong cost efficiency for regular supplementation.

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

  • Clearly identifies the hydrochloride form
  • Two capsules allow serving flexibility
  • Strong cost efficiency

Cons

  • No sustained-release feature
  • Moderate rather than performance-level amount
  • Full serving requires two capsules

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

85 Highest impact

L-arginine hydrochloride is a clearly identified, conventional amino-acid form. The amount is moderate rather than fully performance focused.

Ingredient transparency

81 Highest 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

91 Highest impact

Clear form identity and a moderate amount provide solid basic quality. The low serving cost and large supply provide strong value.

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Ingredients

IngredientAmount per serving
L-Arginine (L-Arginine Hydrochloride)
 1000 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
Arginine (L-Arginine Hydrochloride) · 1000 mg OverallScore71
C+ Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyB+ Value

The clearly identified hydrochloride form provides a moderate serving amount in a practical pill count. Immediate-release delivery may require divided use for sustained effects, but the low cost per gram supports good value. L-arginine may add to the blood-pressure-lowering effects of nitrates or antihypertensive medicines and could cause dizziness or an excessive drop in pressure.

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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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