According to the World Health Organization (WHO), the undesirable effects are classified according to their frequency of development as follows: very often (≥1/10), often (≥1 / 100 and <1110), not often (≥1 / 1,000 and < 1/100), rarely (≥1 / 10,000 and <1/1 000), very rarely (≥1 / 10000, including individual cases), the frequency is unknown - it is not possible to establish the frequency of occurrence according to available data.
Heart Disease:
Infrequently: myocardial ischemia, including the development of an attack of angina or myocardial infarction, tachycardia, arrhythmias (appearance or gain), palpitations, peripheral edema.
Vascular disorders:
Often: excessive reduction in blood pressure, violation of orthostatic regulation of vascular tone (orthostatic hypotension), syncopal conditions, "hot flashes" of the blood to the skin of the face, the appearance or increase of circulatory disorders against the background of stenosing vascular lesions, vasculitis;
Infrequently: "tides" of blood to the skin of the face;
Rarely: occurrence or strengthening of circulatory disorders against the background of stenosing vascular lesions, vasculitis;
Frequency unknown: Raynaud's syndrome.
Disturbances from the nervous system:
Often: headache, dizziness (a feeling of "lightness" in the head);
Infrequently: vertigo, paresthesia, agevzia (loss of taste sensitivity), dysgeusia (a violation of taste sensitivity);
Rarely: tremor, imbalance;
Frequency unknown: cerebral ischemia, including ischemic stroke and transient impairment of cerebral circulation, impaired psychomotor reactions (decreased response), burning sensation, parosmia (impaired perception of odors).
Disturbances on the part of the organ of sight:
Infrequently: visual disorders, including vagueness of the image;
Rarely: conjunctivitis.
Hearing disorders:
Rarely: hearing impairment, tinnitus (ringing in the ears).
Disorders of the psyche:
Infrequently: depressed mood, anxiety, nervousness, motor anxiety, sleep disturbances, including drowsiness;
Rarely: confusion of consciousness;
Frequency unknown: attention violation.
Disturbances from the respiratory system of the chest and mediastinal organs:
Often: "dry" cough (worse at night and lying down), bronchitis, sinusitis, dyspnea;
Infrequently: bronchospasm, including weighting of the course of bronchial asthma, nasal congestion.
Disorders from the gastrointestinal tract:
Often: inflammatory reactions in the stomach and intestines, digestive disorders, abdominal discomfort, dyspepsia, diarrhea, nausea, vomiting;
Infrequently: fatal pancreatitis (cases of pancreatitis fatal taking ACE inhibitors were observed rarely), increased activity of enzymes in the blood plasma of the pancreas, angioedema of the small intestine, pain in the upper abdomen, including those associated with gastritis, constipation, dry oral mucosa mouth;
Rarely: glossitis;
Frequency unknown: aphthous stomatitis (inflammatory reaction of the mucous membrane of the oral cavity).
Disturbances from the liver and bile ducts:
Infrequently: increased activity of "hepatic" enzymes and concentration of conjugated bilirubin in blood plasma;
Rarely: Cholestatic jaundice, hepatocellular lesions;
Frequency unknown: acute hepatic insufficiency, cholestatic or cytolytic hepatitis (lethal outcome was observed extremely rarely).
Violation of the kidneys and urinary tract:
Infrequently: a violation of kidney function, including the development of acute renal failure,increased urine output, increased pre-existing proteinuria, increased urea and creatinine concentrations in the blood.
Disorders from the reproductive system and mammary glands:
Infrequently: transient impotence due to erectile dysfunction, decreased libido;
Frequency unknown: gynecomastia.
Violations of the blood and lymphatic system:
Infrequently: eosinophilia;
Rarely: leukopenia, including neutropenia and agranulocytosis, a decrease in the number of erythrocytes in the peripheral blood, a decrease in the concentration of hemoglobin, thrombocytopenia, lymphadenopathy;
Frequency unknown: oppression of bone marrow hematopoiesis, pancytopenia, hemolytic anemia.
Disturbances from the skin and subcutaneous tissues:
Often: skin rash, in particular maculopapular;
Infrequently: angioedema, including fatal outcome (laryngeal edema can cause airway obstruction leading to death), skin itching, hyperhidrosis (excessive sweating);
Rarely: exfoliative dermatitis, urticaria, onycholysis;
Rarely: photosensitivity reaction;
Frequency unknown: toxic epidermal necrolysis, Stevens-Johnson syndrome, erythema multiforme, pemphigus, weight gain of psoriasis, psoriasis-like dermatitis, pemphigoid or lichenoid (lichen), exanthema or enanthema, alopecia.
Disturbances from musculoskeletal and connective tissue:
Often: muscle cramps, myalgia;
Infrequently: arthralgia.
Disorders from the endocrine system:
Frequency unknown: syndrome of inadequate secretion of antidiuretic hormone (SNA ADH).
Disorders from the metabolism and nutrition:
Often: increasing the concentration of potassium in the blood;
Infrequently: anorexia, decreased appetite;
Frequency unknown: decrease in the concentration of sodium in the blood.
Immune system disorders:
Frequency unknown: anaphylactic or anaphylactoid reactions (with the inhibition of ACE, the amount of anaphylactic or anaphylactoid reactions to insect venoms increases), an increase in the concentration of antinuclear antibodies.
General disorders and disorders at the site of administration:
Often: pain in the chest, a feeling of fatigue;
Infrequently: increased body temperature;
Rarely: asthenia (weakness).