All Supplements
Vitamin B3 (Niacin) vs Biotin (B7)
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin B3 (Niacin)
Biotin (B7)
Typical Dosage
14-16 mg daily
2.5-5 mg daily
Best Form
Nicotinic acid (niacin)
Biotin tablets
Key Benefits
5
5
Evidence Rating
★★★★
★★★★
Best Time
With meals to minimise flushing
With food for optimal absorption
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
Biotin (B7) Benefits
✓Hair health and growth
✓Skin health and dermatitis relief
✓Nail strength and thickness
✓Blood sugar regulation
✓Energy metabolism
Can You Take Both Together?
In most cases, Vitamin B3 (Niacin) and Biotin (B7) 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 Biotin (B7) if your primary goal is: hair health and growth. 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.