Method of managing the blood glucose value of a diabetic user, the method comprising: carrying out a plurality of glucose measurements from the physiological liquids of a user with a glucose measuring unit coupled to a management unit of data； verify if a more recent glucose measurement was made within a first predetermined period of time； Based on the user's selection, recommend a bolus amount of insulin for (a) glucose correction only； (b) carbohydrate coverage only； or (c) carbohydrate coverage and glucose correction, including the recommendation: verify (336) if the user entered an amount of insulin bolus for glucose correction within a predetermined third time period and, of if so, (a) alert (344) the user that insulin may still be physiologically active in the user in a situation during which the user received insulin； and (b) recommend (312C) an amount of insulin for carbohydrate coverage only, otherwise: (1) determine (338) if a preprandial indicator is established with a glucose measurement carried out within the third time period predetermined and, if so, (a) alert (344) the user that insulin can still be physiologically active in the user in a situation during which the user received insulin； and (b) recommend (312C) an amount of insulin for carbohydrate coverage only； (2) determine (340) if a last glucose measurement is marked as postprandial within the third predetermined period of time and, if so, (a) alert (345) to the user that a complete bolus calculation should be used with a preprandial glucose concentration and that carbohydrate coverage should be provided only； and (b) recommend (312C) an amount of insulin for carbohydrate coverage only, and announce the insulin bolus recommendationMétodo de gestión del valor de la glucosa en sangre de un usuario diabético, comprendiendo el método: llevar a cabo una pluralidad de mediciones de glucosa a partir de los líquidos fisiológicos de un usuario con una unidad de medición de glucosa acoplada a una unidad
