Source Naturals - L Citrulline 500mg - 120 Capsules

L-Citrulline for Nitric Oxide Production & Athletic Performance

Source Naturals L-Citrulline delivers 500mg of this powerful amino acid per capsule, providing superior support for nitric oxide production, cardiovascular health, and exercise performance. This 120-capsule bottle offers four months of sustained nitric oxide support for enhanced blood flow, endurance, and overall vascular wellness.*

Key Benefits

• Nitric oxide production – Converts to L-arginine to support sustained nitric oxide (NO) levels*
• Exercise performance – Supports endurance, muscle pump, and workout recovery*
• Cardiovascular health – Promotes healthy blood flow, circulation, and blood pressure already within normal range*
• Energy & stamina – Enhances oxygen and nutrient delivery to muscles and tissues*
• Muscle recovery – Helps reduce muscle soreness and supports faster recovery*
• Superior to L-arginine alone – Provides more sustained elevation of arginine and nitric oxide levels*

Why Choose L-Citrulline?

L-Citrulline is a non-essential amino acid that converts to L-arginine in the kidneys, providing a more sustained and effective way to boost nitric oxide production compared to L-arginine supplementation alone. Because it bypasses first-pass metabolism in the liver, L-citrulline raises blood arginine levels more efficiently, leading to longer-lasting nitric oxide support.*

The Nitric Oxide Advantage

Nitric oxide (NO) is a critical signaling molecule that helps blood vessels relax and expand, improving circulation throughout the body. Enhanced nitric oxide production supports cardiovascular health, lowers blood pressure, improves oxygen delivery to tissues, and enhances athletic performance. L-Citrulline provides the building blocks for sustained NO production.*

Superior to L-Arginine Alone

Research demonstrates that L-citrulline is more effective than L-arginine for raising blood arginine levels. When you take L-arginine directly, much of it is broken down in the liver before reaching the bloodstream. L-Citrulline bypasses this first-pass metabolism, converting to arginine in the kidneys and providing sustained elevation of both arginine and nitric oxide levels.*

Exercise Performance & Recovery

Athletes and active individuals use L-citrulline to enhance workout performance and recovery. By increasing nitric oxide production, L-citrulline improves blood flow to working muscles, delivering more oxygen and nutrients while removing metabolic waste products like ammonia and lactate. This translates to better endurance, reduced fatigue, enhanced muscle pump, and faster recovery.*

Cardiovascular & Circulation Support

L-Citrulline supports cardiovascular health by promoting healthy blood vessel function and circulation. Studies show it may help maintain healthy blood pressure already within normal range, improve arterial flexibility, enhance peripheral circulation, and support overall vascular wellness through sustained nitric oxide production.*

Reduces Muscle Soreness

Clinical research has shown that L-citrulline supplementation can help reduce delayed onset muscle soreness (DOMS) and improve recovery after intense exercise. By supporting efficient removal of metabolic byproducts and enhancing nutrient delivery, L-citrulline helps muscles recover faster and feel better after workouts.*

Source Naturals Quality

Source Naturals has been a trusted name in nutritional supplements for over 40 years, committed to providing science-based formulations using quality ingredients. Each batch is manufactured to strict quality standards to ensure potency and purity.

Suggested Use

Take two to four capsules daily on an empty stomach, or as directed by your healthcare practitioner. For exercise support, take 30-60 minutes before workouts. For cardiovascular support, divide doses throughout the day for sustained benefits.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.