Nutritional supplements; medicinal food preparations in the nature of GRAS ("generally recognized as safe") active moieties in the form of enteric-coated multi-particulates sold as a key component of namely, capsules, tablets and sachets for use in the management of gastrointestinal diseases and disorders; and capsules, tablets and sachets in the form of enteric-coated multi-particulates for use in the management of gastrointestinal diseases and disorders