Question: what is the scientific name of vitamin b3
Answer: The thirteen vitamins required by human metabolism are : vitamin A ( retinols and carotenoids ) , vitamin B ( thiamine ) , vitamin B ( riboflavin ) , vitamin B ( niacin ) , vitamin B ( pantothenic acid ) , vitamin B ( pyridoxine ) , vitamin B ( biotin ) , vitamin B ( folic acid or folate ) , vitamin B ( cobalamins ) , vitamin C ( ascorbic acid ) , vitamin D ( calciferols ) , vitamin E ( tocopherols and tocotrienols ) , and vitamin K ( quinones ) .