Niacin (Vitamin B3) Niacin Oregon State University. Linus Pauling Institute. Micronutrient Information Center. Vitamin B3 (Niacin) University of Maryland Medical Center. Center for Integrative Medicine. Niacin Deficiency Merck Manual of Diagnosis and Therapy.
Oregon State University. Linus Pauling Institute. Micronutrient Information Center.
University of Maryland Medical Center. Center for Integrative Medicine.
Merck Manual of Diagnosis and Therapy.