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Arginine & Citrulline 500 mg/250 mg
NOW Sports
4.6
★ ★ ★ ★ ★
(7381 ratings)
Citrulline 250 mg
Arginine 500 mg
Score 85.0
A foundational supplement combining L-Arginine and L-Citrulline from a reputable brand, designed to support nitric oxide production and blood flow, although multiple servings are typically needed to achieve research-backed dosages.
Quantity: 120 Capsule(s)Servings size: 1 Veg Capsule(s) (120 servings)
Selected goals:
Other goals:
Fitness
Muscle Gain
Cardiovascular Support
Heart Health
leaderboard Score 85.0
A foundational supplement combining L-Arginine and L-Citrulline from a reputable brand, designed to support nitric oxide production and blood flow, although multiple servings are typically needed to achieve research-backed dosages.
Quantity: 240
This product combines L-Arginine and L-Citrulline, two amino acids crucial for nitric oxide production, which supports vasodilation and blood flow throughout the body. L-Arginine is a direct precursor to nitric oxide, while L-Citrulline is converted to L-Arginine in the kidneys, often proving more effective at raising plasma arginine levels than arginine supplementation alone due to better absorption. While the listed serving size provides 500mg of L-Arginine and 250mg of L-Citrulline, these dosages are significantly lower than what is commonly recommended in scientific studies for performance or cardiovascular benefits, often requiring multiple capsules per dose. Despite the low per-capsule dose, the product offers convenience and comes from a well-respected brand with a strong review history, making it a good foundation for those willing to adjust their intake.
- Combines L-Arginine and L-Citrulline, which work synergistically for nitric oxide production and enhanced bioavailability.
- NOW Sports is a highly reputable brand known for quality, purity, and often third-party testing, ensuring product integrity.
- The capsule form offers convenience for daily dosing, and the product has a high volume of positive online reviews.
- The dosages of 500mg L-Arginine and 250mg L-Citrulline per capsule are very low, requiring users to take several capsules (e.g., 6-12) per day to reach clinically effective levels (e.g., 3-6g Arginine, 3-8g Citrulline).
- Compared to higher-dose or powdered alternatives, the cost per *effective* dose can add up significantly, making it less economical for those seeking higher daily intakes without buying in bulk.
- Individuals with low blood pressure should consult a healthcare professional before use, as L-Arginine and L-Citrulline can further lower blood pressure due to their vasodilatory effects.
- People with herpes simplex should exercise caution as Arginine can potentially exacerbate outbreaks by promoting viral replication.
- Consult a doctor if you are pregnant, nursing, have a pre-existing medical condition (especially heart conditions or kidney disease), or are taking any medications, particularly those for blood pressure, nitrates, or erectile dysfunction, before taking this supplement.
$14.42($0.12 per serving)
 Vitacost | $ 15.29 | |
 Daily Vita | $ 15.60 | |
 Amazon | $ 14.42 | |
 Pure Formulas | $ 14.56 | |
 iHerb | $ 16.52 |
| Ingredient | Amount per serving |
|---|---|
| L-Arginine | 500 mg |
| L-Citrulline | 250 mg |
Categories
Citrulline 85.0
Includes L-Citrulline, which is often more effectively absorbed and converted to L-Arginine than direct arginine, making it a highly valuable component for boosting nitric oxide. The quality of the ingredient and brand reputation are strong.
Arginine 80.0
Provides L-Arginine, a direct precursor to nitric oxide, from a trusted brand. Although the per-capsule dose is 500mg, the product allows for flexible dosing to achieve higher total arginine intake for its physiological benefits.
Goals
Fitness 85.0
This combination effectively supports improved blood flow and nutrient delivery to working muscles, enhancing endurance and exercise performance. While individual capsules contain modest doses, taking multiple servings allows users to achieve the beneficial nitric oxide boosting effects for fitness goals.
Cardiovascular Support 85.0
Both L-Arginine and L-Citrulline are well-established for their role in nitric oxide production, which is vital for maintaining healthy blood vessel elasticity and regulating blood pressure. Consistent daily intake, customizable by taking additional capsules, supports long-term cardiovascular well-being.
Muscle Gain 80.0
By promoting vasodilation, this supplement can contribute to a better 'pump' during workouts and improve nutrient transport to muscles, supporting recovery and growth. Users can adjust the number of capsules to reach a dose that aids in these physiological responses.
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