Genetic differences between individuals influence their response to drugs. Pharmacogenetics allows each treatment to be better adjusted according to the individual genetic makeup, in search of more personalized treatments that maximize efficacy and minimize adverse effects. OBJECTIVE: Select the most appropriate drugs, using genetic information to: Minimize side effects and Maximize therapeutic efficacy. The genetic response of the patient to each drug will allow the adaptation of the necessary treatment for depression, anxiety, psychosis or epilepsy.