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L-Arginine 500 mg

Natural Factors
4.7
★ ★ ★ ★ ★
(2620 ratings)
Arginine 1000 mg
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Score94

A convenient capsule-based arginine supplement that supports vascular health and blood flow with a 1000mg daily serving.

How scoring works
Quantity:180 Capsule(s) • (90 servings)
Goals:

Score 94

A convenient capsule-based arginine supplement that supports vascular health and blood flow with a 1000mg daily serving.

How scoring works
$16.77($0.18 per serving)
Vitacost
$ 16.77
iHerb
$ 16.77
Amazon
$ 16.77
iHerb
$ 16.77
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Analysis

These capsules provide L-arginine hydrochloride, which may help support the body's natural production of nitric oxide. Each two-capsule serving delivers 1000mg, which is a standard amount for maintaining healthy endothelial function. The capsule format is generally easier for many people to swallow than large tablets.

This version comes in a larger bottle, making it a good fit for those who plan to use it long-term for circulatory wellness. It is a straightforward approach to adding amino acids to your daily diet without unnecessary additives.

Pros

  • Easy-to-swallow capsule form
  • Larger 180-count bottle
  • Consistent 1000mg serving
  • Focuses on a single active ingredient

Cons

  • Requires taking two capsules for the full dose
  • Contains gelatin if that is a dietary concern
  • Standard dose might be low for athletes

Warnings

  • Consult a professional if you have a history of cold sores
  • Stop use if you experience persistent headaches
  • Keep out of reach of children

Nutrient quality

92 Highest impact

Utilization of the hydrochloride form offers excellent solubility and reliable uptake of the active amino acid. A robust 1000mg dose provides focused support for nitric oxide pathways and cardiovascular stamina.

Ingredient transparency

93 Highest impact

Labeling clearly specifies the amount of active L-arginine provided in each serving. Serving size and intake guidance are transparent, though some inconsistency exists between the product name and ingredient weight.

Customer satisfaction

94 Highest impact

High average rating of 4.67 and a massive review count of over 2,600 validate the product's widespread acceptance. Strong consistency in user feedback suggests reliable results for cardiovascular and performance goals.

Value for money

96 Highest impact

Cost of 0.18 per serving represents excellent value for a 1000mg dose of L-arginine. The large quantity of 180 capsules ensures long-term affordability for individuals on a daily regimen.

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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
C+ Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyB+ Value
Arginine is vital for the production of nitric oxide, which helps maintain flexible and healthy arteries. This supplement offers a solid moderate dose in an easy-to-use capsule format.
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