OSU. LPI. Micronutrient Information Center.
Due to a lapse in federal funding, this USDA website will not be actively updated.
Once funding has been reestablished, online operations will continue.
OSU. LPI. Micronutrient Information Center.
Merck Manual of Diagnosis and Therapy.
DHHS. NIH. National Library of Medicine.
Read about the function, sources, and intake recommendations for Niacin.