Vitamin P (also known as niacin, PP or B3) is extremely important for the proper functioning of the body - it is necessary for the proper absorption and assimilation of vitamin C. It is a certain number of compounds that belong to the group of flavonoids (organic chemical compounds with functions such as antioxidants). Niacin belongs to the group of vitamins that have a significant effect on correct brain function and maintaining a youthful appearance.