Food supplement in sachets based on 3 strains of probiotics and prebiotics that help strengthen the protective barrier against microbes and promote the balance of microflora, essential for the body's defenses. The probiotic strains in its formula are selected for their resistance to gastric and bile acidity. It acts on 3 lines of defense: it helps to strengthen the barrier against microbes, favors the stimulation of the innate immune response and helps to stimulate the acquired immune response.