Vitamin B3

Vitamin B3 is a water-soluble vitamin part of the group of essential nutrients known as the B Complex. Vitamin B3 is required for the metabolism of carbohydrates and protein into energy and also provides support to the nervous system and cardiovascular health. Vitamin B3 is also important for sleep and immunity.


  • Necessary for normal neurological function
  • Necessary for normal energy release from food
  • Necessary for normal structure and function of skin and mucous membranes
  • Contributes to normal psychological function
  • Contributes to the reduction of tiredness and fatigue

Natural Sources: Red meat, poultry, fish, nuts, legumes, avocados, brown rice, whole wheat products, mushrooms, green peas, potatoes.

Formulated with integrity

The ingredients chosen for use in Pro You products are backed by the latest scientific research, or steeped in traditional use. We believe that the best health choice is an informed one, so for your reading, we’ve collated a selection of the most relevant unaffiliated studies that support the selections made by our lead scientist and naturopath when formulating our products

Published Research

This research is for informational use only. The results reported may not occur in all individuals. This information should not be read to recommend or endorse any specific products.

Bogan KL, Brenner C. Nicotinic acid, nicotinamide, and nicotinamide riboside: a molecular evaluation of NAD+ precursor vitamins in human nutrition. Annu Rev Nutr. 2008;28:115-30. doi:

Jacobson MK, Jacobson EL. Vitamin B3 in Health and Disease: Toward the Second Century of Discovery. Methods Mol Biol. 2018;1813:3-8. doi: 10.1007/978-1-4939-8588-3_1. PMID: 30097857.

Mehmel M, Jovanović N, Spitz U. Nicotinamide Riboside-The Current State of Research and Therapeutic Uses. Nutrients. 2020 May 31;12(6):1616. doi: 10.3390/nu12061616. PMID: 32486488; PMCID: PMC7352172.

Further Reading

9 Science-Based Benefits of Niacin (Vitamin B3)

Written by Kerri-Ann Jennings, MS, RD

November 26, 2018

The Health Benefits and Uses of Niacin

By Cathy Wong Fact checked by Cara Lustik

May 31, 2020

6 Evidence-Based Vitamin B3 (Niacin) Benefits

Medical review by Laura J. Kunces, Ph.D., R.D.

October 23, 2019