All Supplements
Citrulline vs Vitamin B12
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Citrulline
Vitamin B12
Typical Dosage
6-8g per day
500-1,000mcg daily
Best Form
L-Citrulline
Methylcobalamin
Key Benefits
5
5
Evidence Rating
★★★★
★★★★
Best Time
30-60 minutes before exercise or training
Morning — may be energising
Citrulline Benefits
✓Enhanced blood flow and vasodilation
✓Improved exercise performance and endurance
✓Reduced muscle fatigue and soreness
✓Better erectile function
✓Cardiovascular health support
Vitamin B12 Benefits
✓Energy production
✓Nerve function and protection
✓Red blood cell formation
✓DNA synthesis
✓May reduce homocysteine levels
Can You Take Both Together?
In most cases, Citrulline and Vitamin B12 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 Citrulline if your primary goal is: enhanced blood flow and vasodilation. Choose Vitamin B12 if your primary goal is: energy production. 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.