Kit for use as a therapeutic adjuvant in the daily diet of patients suffering from neoplasia, comprising a plurality of daily food preparations, wherein - a first daily food preparation contains A1) a nutritional combination comprising carbohydrates in an amount ranging from 51% to 55% (w/w), proteins in an amount ranging from 11% to 15% (w/w), lipids in an amount ranging from 30% to 34% (w/w); and B1) dietary fibre in an amount ranging from 25 g to 29 g, the first preparation being characterized by an average caloric content of between 450 and 600 Kcal; - a plurality of a second daily food preparation which contains A2) a nutritional combination comprising carbohydrates in an amount ranging from 8% to 12% (w/w), proteins in an amount ranging from 7% to 11% (w/w), lipids in an amount ranging from 77% to 81% (w/w); and B2) dietary fibre in an amount ranging from 2 g to 6 g, the second preparation being characterized by an average caloric content of between 150 and 300 Kcal; and - a third daily food preparation which contains A3) a nutritional combination comprising carbohydrates in an amount ranging from 46% to 50% (w/w), proteins in an amount ranging from 12% to 16% (w/w), lipids in an amount ranging from 35% to 39% (w/w); and B3) dietary fibre in an amount ranging from 12 g to 16 g, the third preparation being characterized by an average caloric content of between 150 and 300 Kcal, and wherein the components of the nutritional combinations (A1, A2, A3) and the dietary fibre (B1, B2, B3) are foods of vegetable origin. - a first daily food preparation contains A1) a nutritional combination comprising carbohydrates in an amount ranging from 51% to 55% (w/w), proteins in an amount ranging from 11% to 15% (w/w), lipids in an amount ranging from 30% to 34% (w/w); and B1) dietary fibre in an amount ranging from 25 g to 29 g, the first preparation being characterized by an average caloric content of between 450 and 600 Kcal; A1) a nutritional combination comprising carbohydrates in an amount ranging from 51% to 55% (w/w), proteins in an amount ranging from 11% to 15% (w/w), lipids in an amount ranging from 30% to 34% (w/w); and B1) dietary fibre in an amount ranging from 25 g to 29 g, - a plurality of a second daily food preparation which contains A2) a nutritional combination comprising carbohydrates in an amount ranging from 8% to 12% (w/w), proteins in an amount ranging from 7% to 11% (w/w), lipids in an amount ranging from 77% to 81% (w/w); and B2) dietary fibre in an amount ranging from 2 g to 6 g, the second preparation being characterized by an average caloric content of between 150 and 300 Kcal; and A2) a nutritional combination comprising carbohydrates in an amount ranging from 8% to 12% (w/w), proteins in an amount ranging from 7% to 11% (w/w), lipids in an amount ranging from 77% to 81% (w/w); and B2) dietary fibre in an amount ranging from 2 g to 6 g, - a third daily food preparation which contains A3) a nutritional combination comprising carbohydrates in an amount ranging from 46% to 50% (w/w), proteins in an amount ranging from 12% to 16% (w/w), lipids in an amount ranging from 35% to 39% (w/w); and B3) dietary fibre in an amount ranging from 12 g to 16 g, A3) a nutritional combination comprising carbohydrates in an amount ranging from 46% to 50% (w/w), proteins in an amount ranging from 12% to 16% (w/w), lipids in an amount ranging from 35% to 39% (w/w); and B3) dietary fibre in an amount ranging from 12 g to 16 g, the third preparation being characterized by an average caloric content of between 150 and 300 Kcal, and wherein the components of the nutritional combinations (A1, A2, A3) and the dietary fibre (B1, B2, B3) are foods of vegetable origin.