Micro-immunotherapy is an immunomodulation therapy that uses the same messengers as the immune system (for example, cytokines, hormones, growth factors, nucleic acids) to transmit information to the body and “readjust” the immune response. In other words, its objective is to restore correct communication between the immune system cells to help them recover their innate capacity to defend us against aggressors or to limit their response when it is exaggerated. In contrast to classic immunotherapy, micro-immunotherapy formulas use a broad range of immune substances (the so-called “messengers”). These are prepared in low concentrations (low and ultra-low doses) through a process of dilution-dynamisation, thereby guaranteeing high tolerance. Furthermore, depending on whether stimulation, modulation or inhibition on the organism is desired, the levels of concentration used can vary within the same formula. Micro-immunotherapy can be a loyal ally in the treatment of diseases resulting from an imbalance of the immune system, both acute and chronic. Infectious and oncological pathologies, or autoimmune diseases are included in these.