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Nitric Oxide Booster

Nutricost Performance
4.8
★ ★ ★ ★ ★
(861 ratings)
Arginine 500 mg
Citrulline 375 mg
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Score80
Useful arginine breadth and value are offset by underdosed, partly undefined citrulline and a three-capsule serving.
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Quantity:180 Capsule(s) • (60 servings)
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Score 80

Useful arginine breadth and value are offset by underdosed, partly undefined citrulline and a three-capsule serving.
How scoring works
$14.95($0.24 per serving)
iHerb
$ 14.95
Vitacost
$ 14.95
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Analysis

The formula supplies standard L-arginine, arginine hydrochloride, and AAKG at a combined 1.5 g. Multiple forms broaden the profile, although evidence does not establish that mixing them is better than a sufficient amount of one well-defined form.

Pure L-citrulline and citrulline malate total 750 mg by ingredient weight. The malate ratio is missing, so active citrulline is lower than the headline amount and remains well below common performance servings.

Three capsules are manageable and the cost per gram of arginine is favorable. The product fits moderate-dose users who want capsules, but a powder would generally deliver larger amino-acid amounts more efficiently.

Who is it for
  • Adults wanting a multi-form arginine blend
  • Gym users who prefer capsules
  • People seeking moderate nitric-oxide support
Best for
  • Arginine-focused workout support
  • Multi-form amino-acid use
  • Moderate pre-exercise supplementation

Pros

  • Combines three arginine forms
  • Meaningful total arginine amount
  • Favorable arginine cost efficiency

Cons

  • Citrulline remains underdosed
  • Citrulline-malate ratio is not disclosed
  • Three capsules still deliver less than many powders

Warnings

  • Arginine and citrulline may add to nitrates, blood-pressure medicines, or PDE-5 inhibitors and cause dizziness or excessive blood-pressure lowering.
  • Arginine can trigger herpes simplex recurrences in some susceptible users.
  • Higher amino-acid intake may cause nausea, cramping, or diarrhea.

Nutrient quality

83 Highest impact

Multiple related amino-acid forms create a coherent nitric-oxide formula with moderate arginine depth. Underdosed citrulline and an unknown malate ratio limit quality.

Ingredient transparency

79 High impact

All active totals are disclosed without a hidden blend. An unspecified malate ratio, missing full directions, and absent excipients reduce precision.

Customer satisfaction

72 High impact

The supplied average rating is very strong and the rating volume is substantial. No specific experience details were provided to judge repeated complaints or purpose alignment.

Value for money

83 Highest impact

The formula provides fair value for its cost. It compares favorably within the category despite remaining limitations.

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Ingredients

IngredientAmount per serving
L-Arginine
500 mg
L-Arginine Hydrochloride
500 mg
Arginine AKG
500 mg
L-Citrulline
375 mg
L-Citrulline Malate
375 mg
Gluten Free Adults 18–50
Report overview
Arginine · 500 mg OverallScore72
B Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value

The blend combines standard L-arginine, its hydrochloride salt, and AAKG, giving it a broader form profile than a basic formula. The three-capsule serving supplies a moderate total amount rather than a high performance dose, and no sustained-release feature is stated. Cost per gram remains favorable for the amount of arginine supplied.

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Citrulline · 375 mg OverallScore36
D Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyD- Value

The formula combines pure L-citrulline with citrulline malate, but the malate ratio is not disclosed. Its estimated active L-citrulline remains below the minimum useful dose for this category. The cost per active gram is also high, and no sourcing or purity marker is provided.

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Loading alternative details
67 Performance

Pump-Ocalypse Blue Raz

Bucked Up
Glycerol, citrulline, arginine, and agmatine form a coherent stimulant-free pump formula, but several amounts are moderate rather than full strength. An opaque mushroom blend and low betaine amount weaken dose quality and disclosure. Compared with the original, its Arginine and Citrulline coverage and stronger formulation depth make it a better quality-focused match.
74 Performance

Wellness ImmuNitric

Source Naturals
A substantial arginine amount with modest citrulline and B-vitamin support creates a coherent vascular formula at favorable value. Duplicate folate entries reduce clarity, and the three-tablet serving may add to the effects of nitrates or blood-pressure medicines. Compared with the original, its Arginine and Citrulline coverage and stronger formulation depth make it a better quality-focused match.
78 Performance

Arginine & Citrulline 500 mg / 250 mg

NOW Sports
A large supply of clearly disclosed L-arginine and L-citrulline offers efficient routine value. Very low serving amounts mean targeted nitric-oxide or exercise use would require many capsules. Compared with the original, its Arginine and Citrulline coverage and stronger formulation depth make it a better quality-focused match.
79 Budget

L-Arginine + L-Citrulline 750 mg

Nutricost
A large supply of clearly separated L-arginine and L-citrulline provides economical but basic nitric-oxide support. Both amounts are too low for targeted performance use without taking multiple capsules. Compared with the original, its lower serving cost improves affordability while retaining Arginine and Citrulline support.
78 Budget

L-Arginine L-Citrulline Complex 1000 mg

Best Naturals
L-arginine hydrochloride and free-form citrulline provide a focused combination with good supply economy. The arginine amount is only moderate and the citrulline amount is far below targeted performance use. Compared with the original, its lower serving cost improves affordability while retaining Arginine and Citrulline support.
78 Budget

L-Arginine L-Citrulline Complex

Source Naturals
A large supply of focused arginine and citrulline offers reasonable routine value. The arginine amount is modest, the citrulline amount is far below targeted use, and arginine may add to blood-pressure-lowering medicines. Compared with the original, its lower serving cost improves affordability while retaining Arginine and Citrulline support.
73 Value

Wellness ImmuNitric

Source Naturals
A substantial arginine amount with modest citrulline and B-vitamin support creates a coherent vascular formula at reasonable value. Duplicate folate entries reduce label clarity, and the vasodilating combination may add to nitrates or blood-pressure medicines. Compared with the original, its Arginine and Citrulline coverage and balance of formula depth and serving cost provide better practical value.
77 Value

Arginine & Citrulline 500 mg/250 mg

NOW Sports
Clearly disclosed L-arginine and L-citrulline provide a focused nitric-oxide formula at a low serving cost. Both amounts are far below targeted performance ranges, so meaningful use would require many capsules. Compared with the original, its Arginine and Citrulline coverage and balance of formula depth and serving cost provide better practical value.
73 Value

Nitri Oxide Support

Pure Encapsulations
A substantial AAKG amount and vitamin C provide a coherent exercise-circulation base. Citrulline malate is underdosed with an undisclosed ratio, while the relatively costly serving weakens value. Compared with the original, its Arginine and Citrulline coverage and balance of formula depth and serving cost provide better practical value.
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