All Supplements
Vitamin B3 (Niacin) vs Vitamin B12
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin B3 (Niacin)
Vitamin B12
Typical Dosage
14-16 mg daily
500-1,000mcg daily
Best Form
Nicotinic acid (niacin)
Methylcobalamin
Key Benefits
5
5
Evidence Rating
★★★★
★★★★
Best Time
With meals to minimise flushing
Morning — may be energising
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
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, Vitamin B3 (Niacin) 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 Vitamin B3 (Niacin) if your primary goal is: energy production and metabolism. 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.