A nutritional supplement is either meant to offer nutrients with the intention to growth the amount in their consumption, or to provide non-nutrient chemicals that are claimed to have a biologically useful impact. Dietary supplements as usually understood consist of vitamins, minerals, fiber, fatty acids, or amino acids, amongst different materials. U.S. authorities outline dietary supplements as foods, at the same time as someplace else they may be categorised as drugs or other merchandise. There are greater than 50,000 dietary supplements to be had. More than 1/2 of the U.S. adult population (53%-55%) consumes nutritional supplements with most not unusual ones being multivitamins.