Niacin vs Vitamin B9

TL;DR

Quick comparison: Niacin and Vitamin B9 have 0 overlapping categories and appear together in 2 products.

  • Choose Niacin if: Niacin (vitamin B3) exists as nicotinic acid, niacinamide, and nicotinamide ribo...
  • Choose Vitamin B9 if: Water-soluble vitamin (folate) essential for DNA synthesis, cell division, and m...
  • Take both if: You want comprehensive coverage across 0 shared categories.
564 products
analyzed in our comprehensive supplement database
Source: MoodStack Database (2026)

Side-by-Side Comparison

FeatureNiacinVitamin B9
Typevitaminvitamin
Common Dosage14-20 mg (RDA); therapeutic: 500-3000 mg nicotinic acid (under medical supervision)400 mcg DFE daily
Best BioavailabilityNiacinamide (90%)Folic acid (95%)
Categories00
Available Products00

Niacin

Typevitamin
Common Dosage14-20 mg (RDA); therapeutic: 500-3000 mg nicotinic acid (under medical supervision)
Best BioavailabilityNiacinamide (90%)
Categories0
Available Products0

Vitamin B9

Typevitamin
Common Dosage400 mcg DFE daily
Best BioavailabilityFolic acid (95%)
Categories0
Available Products0

Can You Take Both?

Yes, Niacin and Vitamin B9 can typically be taken together. In fact, we found 2 products in our database that contain both supplements, suggesting they complement each other well.

Key Differences

Niacin

Niacin (vitamin B3) exists as nicotinic acid, niacinamide, and nicotinamide riboside (NR). Nicotinic acid uniquely causes vasodilatory "flush" and is the most effective natural agent for raising HDL cholesterol. All forms serve as precursors to NAD+/NADH, essential cofactors for 400+ enzymatic reactions.

Categories:

Common Forms:

  • Niacinamide (90% bioavailability)

Vitamin B9

Water-soluble vitamin (folate) essential for DNA synthesis, cell division, and methylation reactions. Critical during pregnancy.

Categories:

Common Forms:

  • Folic acid (95% bioavailability)
  • L-Methylfolate (5-MTHF) (85% bioavailability)
  • Folinic acid (Leucovorin) (80% bioavailability)

Products Containing Both Niacin and Vitamin B9

We found 2 products that combine both supplements:

Frequently Asked Questions

What is the difference between Niacin and Vitamin B9?

Niacin and Vitamin B9 are both important supplements with distinct properties. Niacin Niacin (vitamin B3) exists as nicotinic acid, niacinamide, and nicotinamide riboside (NR). Nicotinic acid uniquely causes vasodilatory "flush" and is the most effective natural agent for raising HDL cholesterol. All forms serve as precursors to NAD+/NADH, essential cofactors for 400+ enzymatic reactions., while Vitamin B9 Water-soluble vitamin (folate) essential for DNA synthesis, cell division, and methylation reactions. Critical during pregnancy..

Can I take Niacin and Vitamin B9 together?

Based on our analysis of 2 products that contain both, yes, Niacin and Vitamin B9 can typically be taken together. However, always consult with a healthcare provider before combining supplements.

Which is more popular: Niacin or Vitamin B9?

In our database of 564 products, Niacin appears in 12 products, while Vitamin B9 appears in 41 products.

Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any supplement regimen.

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