A delivery system for nutraceuticals uses a low caloric chocolate base for containing one or more nutraceuticals, either blended with the chocolate itself, or added as a liquid or creme filling. The chocolate has a relatively high level of oligomeric proanthocyanidins, and preferably further includes a phytosterol and DHA, as well as being sweetened with a sweetener blend containing tagatose and a secondary low caloric, high intensity sweetener, preferably Lo Han Guo extract. Using the inventive system, delivery of nutraceuticals in unit dosage form is facilitated, as the selected dose is carried within individual chocolate product pieces that taste substantially the same as conventional chocolate, though with few calories from carbohydrates, or effects on insulin response encountered with typical chocolate formulations.