A food supplement is a concentrated source of nutrients or other substances that is intended to supplement a person’s normal diet. Food supplements are sold in dose form, such as pills, tablets, capsules, liquids, or powders. They can contain a variety of ingredients, including: Vitamins Minerals Amino acids Essential fatty acids Fiber Plants and herbal extracts The purpose of food supplements is to help people improve or maintain their overall health. However, there are rules in place to protect consumers from potential health risks and to ensure that they are not given misleading information