A preparation that supplies additional nutrients or active compounds to the body that may not be obtained by the normal diet.
Products intended to supplement the body’s nutritional requirements. Nutritional supplements include vitamins, minerals, herbal products, and dietary aids. They are sold without prescription and are sometimes advertised as providing miraculous benefits, such as curing disease or stopping the aging process. There is considerable debate as to whether people need to take nutritional supplements, and they are not without risk—especially in high doses.