B3 is the symbol for Niacin. it is Nicotinic acid .It's one of the water soluble vitamins with Thiamine & Riboflavin.
Pellagra is a disorder brought on by a deficiency of the nutrient called niacin or nicotinic acid, one of the B-complex vitamins.
Vitamin A
Vitamins and Minerals
It helps to absorb magnesium which is essential for proper bowel movement
Niacin (or Vitamin B3 or nicotinic acid; the correct name after IUPAC nomenclature is pyridine-3-carboxylic acid) has the chemical formula C6H4NO2.
The Small Intestine
the digestive system and the respitory system
""Niacin was first described by Hugo Weidel in 1873 in his studies of nicotine.[4] The original preparation remains useful: the oxidation of nicotine using nitric acid.[5] Niacin was extracted from livers by Conrad Elvehjem who later identified the active ingredient, then referred to as the "pellagra-preventing factor" and the "anti-blacktongue factor."[6] When the biological significance of nicotinic acid was realized, it was thought appropriate to choose a name to dissociate it from nicotine, in order to avoid the perception that vitamins or niacin-rich food contains nicotine, or that cigarettes contain vitamins. The resulting name 'niacin' was derived from nicotinic acid + vitamin.""
Nutrients such as carbohydrates, proteins, fats, vitamins, and minerals are absorbed from the digestive tract directly into the blood.
The 6 essential nutrients for optimal health and functioning are carbohydrates, proteins, fats, vitamins, minerals, and water.
it belongs to the digestive system cause the liver helps with the synthesis of the vitamins and minerals we get from the food we eat.