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  1. Niacin (Vitamin B3): Benefits and Side Effects - WebMD

  2. Niacin (Vitamin B3): Benefits, Dosage, and more - Healthline

  3. Niacin (Vitamin B3): Uses, Benefits, Sources & Side Effects

  4. Niacin - Mayo Clinic

  5. 16 Foods That Are High in Niacin (Vitamin B3) - Healthline

  6. Vitamin B3 - Wikipedia

  7. Niacin - Health Professional Fact Sheet - Office of Dietary …

  8. Niacin – Vitamin B3 – The Nutrition Source

  9. NIACIN AND NIACINAMIDE (VITAMIN B3) - Uses, Side Effects, …

  10. Niacin - Consumer - Office of Dietary Supplements (ODS)