TOPICS: Niacin production, riboflavin, pyridoxine (B6), tryptophan, dyslipidemia, very low density lipoprotein (VLDL), high density lipoproteins (HDL), hyperpigmentation, niacin deficiency, Hartnup disease, dermatitis of collar-region, glossitis, diarrhea, dementia, nicotinic acid supplementation, high protein diet, niacin excess, hyperglycemia, hyperuricemia, facial flushing, prostaglandins, aspirin
