Answer by
Shaygel (60)
B1: thiamine, deficiency causing major fatigue. B2: riboflavin, deficiency causes chapped/cracked lips, mouth/throats sores. B3: niacin, deficiency slows metabolism/decreases tolerance of colds. B5: pantothenic acid, deficiency impairs energy production. B6: pyridoxin, balances sodium&potassium. B7: biotin, necessary for cell growth. B9: folic acid, synthesizes DNA. B12: cobalamin, key-player of nervous system.