All Supplements
Vitamin B3 (Niacin) vs L-Arginine
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin B3 (Niacin)
L-Arginine
Typical Dosage
14-16 mg daily
2-3g per day
Best Form
Nicotinic acid (niacin)
L-Arginine HCl
Key Benefits
5
5
Evidence Rating
★★★★
★★★
Best Time
With meals to minimise flushing
30-60 minutes before exercise or with meals
Vitamin B3 (Niacin) Benefits
✓Energy production and metabolism
✓DNA repair and cellular health
✓Cardiovascular health and cholesterol support
✓Brain function and cognitive support
✓Skin health and nervous system function
L-Arginine Benefits
✓Enhanced blood flow and circulation
✓Cardiovascular health support
✓Improved exercise performance
✓Wound healing and tissue repair
✓Immune system support
Can You Take Both Together?
In most cases, Vitamin B3 (Niacin) and L-Arginine 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 Vitamin B3 (Niacin) if your primary goal is: energy production and metabolism. Choose L-Arginine if your primary goal is: enhanced blood flow and circulation. 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.