The present invention relates to a medical food or pharmaceutical product containing functional ingredients comprising vitamins, antioxidants, minerals, and amino acids, having an intense taste and flavor profile, and comprising a flavor modifying composition, said composition comprising major steviol glycosides comprising Reb A, Reb C, Reb D and Stevioside, and glycosylated diterpene derivative plant molecules, derived from a Stevia rebaudiana plant, wherein the content of each of the four major steviol glycosides varies between 1% to 25% of the composition.