All Supplements
L-Arginine vs Citrulline
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
L-Arginine
Citrulline
Typical Dosage
2-3g per day
6-8g per day
Best Form
L-Arginine HCl
L-Citrulline
Key Benefits
5
5
Evidence Rating
★★★
★★★★
Best Time
30-60 minutes before exercise or with meals
30-60 minutes before exercise or training
L-Arginine Benefits
✓Enhanced blood flow and circulation
✓Cardiovascular health support
✓Improved exercise performance
✓Wound healing and tissue repair
✓Immune system support
Citrulline Benefits
✓Enhanced blood flow and vasodilation
✓Improved exercise performance and endurance
✓Reduced muscle fatigue and soreness
✓Better erectile function
✓Cardiovascular health support
Can You Take Both Together?
In most cases, L-Arginine and Citrulline can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication.
Which Should You Choose?
Choose L-Arginine if your primary goal is: enhanced blood flow and circulation. Choose Citrulline if your primary goal is: enhanced blood flow and vasodilation. Many people take both as they target different aspects of health.
Disclaimer: This comparison is for educational purposes only. Always consult a healthcare professional before starting any supplement.