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NOW Foods NOW L-Arginine 1000mg
SPECIMEN #NOW-L-AR
AMINO_ACIDNOW Foods

NOW L-Arginine 1000mg

Nitric oxide support for blood flow and exercise recovery.. L-Arginine needs much higher doses to be effective for blood flow. Most clinical studies use 5 to 6 grams, so a single 1000mg pill is just a fraction of what you actually need. You'll likely need to swallow half the bottle to see the results you're looking for.

5.0/10
DECENT

L-Arginine at 1000mg is only 33% of the 3000mg minimum effective dose and 17% of the 6000mg optimal. Someone buying this for blood flow or performance will need 3-6 capsules per serving to get clinical benefits. Severely underdosed for its core purpose.

1 ingredientCapsules50 servings
Evidence
7.0
Dosing
1.7
SynergyN/A (single ingredient)
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What We Like

  • Trusted GMP manufacturer
  • Clean single-ingredient profile
  • Highly affordable

Watch Out For

  • Significantly underdosed for performance
  • Poor bioavailability compared to Citrulline
  • Requires taking 5 to 6 pills for clinical effect

What We Analyzed

NOW L-Arginine 1000mg Supplement Facts

Verified Supplement Facts

Every dose checked against clinical research

We analyzed the actual supplement facts panel for this product. Every ingredient dose below was cross-referenced with published clinical trials to determine if it matches what studies actually use.

4 ingredients analyzed1 underdosed

Source: Official product page

Ingredient Breakdown

1 underdosed
Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
L-Arginine7.0
1000mgUNDERDOSED
17%
1000mg

of 6000mg

UNDERDOSED
17%
In our database (click to learn more) Not yet reviewed
Other Ingredients(inactive)

Hypromellose (cellulose capsule), Stearic Acid (vegetable source), Silicon Dioxide

Our Analysis

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