The purpose of food supplements is to supplement the intake of the nutrients necessary for our body offered by the regular diet. There is a wide range of nutrients and other substances with nutritional or physiological effects that may be present in food supplements including, among other, vitamins, minerals, amino acids, essential fatty acids, fibre, various plants and herbal extracts, either individually or in combination. They are marketed in dosed form, i.e. capsules, tablets, pills, liquid ampoules, vials, bottles with dropper or dispenser, and other similar forms to be taken in small unit amounts.