Today, the diagnosis of functional dyspepsia is quite common and is very common in the practice of a physician, family doctor and gastroenterologist. Functional dyspepsia is the presence of symptoms in the gastroduodenal area without the presence of organic, systemic or metabolic disorders. This condition is defined as a feeling of discomfort and pain in the epigastric region in the absence of symptoms of reflux. Symptoms of dyspepsia are found in many patients, but not all of them seek medical attention. To date, the issues of etiology and pathogenesis remain unexplored. But much of the role is given to genetic factors, the polymorphism of some genes. Lifestyle, eating fatty, fried, spicy foods, smoking, drinking alcohol, infections, and psychogenic factors are also likely to be important. These factors include the characteristics of the patient’s character, the presence of chronic stress, psychological states accompanied by depression, anxi-ety and others. Patients with functional dyspepsia have the following complaints: epigastric pain, early satiety, burning in the epigastrium, postprandial overflow. But keep in mind that this diagnosis is an exclusion diagnosis. That is, it is necessary to make sure that the patient has no symptoms of anxiety (progressive dysphagia, unmotivated weight loss, anemia, fever, etc.), that the patient does not take nonsteroidal anti-inflammatory drugs, no Helicobacter pylori infection, endoscopy, which revealed no abnormalities. Patients with prolonged symptoms should be excluded from the psychological connection with the disease or the possible presence of food intolerance.