Undesirable reactions are systematized according to system-organ classes
and are listed in accordance with the following gradation:
very frequent (≥1/10), frequent (from ≥1/100 to <1/10),
infrequent ≥1/1000 to <1/100), rare (from ≥1/10000 to <1/1000),
very rare (<1/10000), the frequency is unknown (single messages, frequency can not be estimated from available data).
Violations of the blood and lymphatic system
The frequency is unknown: hemorrhages in the skin and mucous membranes (ecchymosis).
Immune system disorders
Infrequent: hypersensitivity.
Rarely: anaphylactic shock.
Disorders from the endocrine system
Rarely: syndrome of inadequate secretion of antidiuretic hormone.
Disorders from the metabolism and nutrition
Infrequently: hyperlipidemia, weight loss.
Frequency unknown: hyponatremia.
Disorders of the psyche
Often: agitation, anxiety, depression, eating disorders, sleep disorders, suicidal behavior (suicide attempts and suicidal thoughts).
Infrequently: panic attack, confusion, delusions, hallucinations, mania, decreased libido, nightmarish dreams, suicidal tendencies of thinking.
Rarely: derealization, pathological thinking, mental disorder. Frequency unknown: aggression.
Disturbances from the nervous system
Very often: headache.
Often: migraine, tremor, dizziness, dysesthesia (a sensitivity disorder), drowsiness.
Infrequent: memory impairment, akathisia, imbalance, a violation of taste perception, fainting.
Rarely: acute disturbance of cerebral circulation, dyskinesia, trembling paralysis (parkinsonism), convulsions.
The frequency is unknown: serotonin syndrome (see "Interactions with Other Drugs" for a description), convulsions.
Disturbances on the part of the organ of sight
Infrequent: dry eyes, pain in the eyes, mydriasis, violation
accommodation, blurred vision, impaired vision.
Hearing disorders and labyrinthine disorders
Infrequent: sensation of noise in the ears, vertigo.
Heart Disease
Often: tachycardia, palpitation.
Infrequent: violation of the heart rhythm, blockade of the bundle branch, extrasystole, myocardial infarction. Rarely: stenocardia.
Vascular disorders
Often: a sensation of "tides" of blood to the head, an increase in blood pressure.
Infrequently: Raynaud's disease, lowering of blood pressure, orthostatic hypotension.
Disturbances from the respiratory system, chest and mediastinal organs
Infrequently: cough, dyspnoea, dry nasal mucosa, pharyngeal disorders.
Disorders from the gastrointestinal tract
Very often: nausea. Hasto: constipation, diarrhea, abdominal pain, indigestion, vomiting, dry mouth. Infrequently: colitis, gastritis, a violation of the motility of the gastrointestinal tract, a feeling of discomfort in gastrointestinal tract, bloating, peptic ulcer and duodenal ulcer, hemorrhoids, stomatitis.
Disturbances from the liver and bile ducts
Infrequently: increase in the concentration of liver enzymes in the blood plasma.
Rarely: hepatitis, hepatocellular disorders.
Frequency unknown: cytolytic hepatitis.
Disturbances from the skin and subcutaneous tissues
Often: itching, rash, increased sweating
Infrequent: allergic reaction (urticaria), dermatitis, dermatosis.
Rarely: sensitization reactions
Frequency Unknown: Stevens-Johnson Syndrome
Disturbances from the musculoskeletal system and connective tissue
Often: musculoskeletal pain
Infrequent: stiff muscles, myalgia.
Disorders from the kidneys and urinary tract
Often: difficulty urinating, frequent urination.
Infrequently: chromaturia, urinary incontinence, urinary retention.
Violations of the genitals and mammary gland
Often: violations of ejaculation, erectile dysfunction, testicular pain.
Infrequently: amenorrhea, hypermenorrhea, menstruation, uterine bleeding, dysfunction of the prostate gland.
General disorders and disorders at the site of administration
Often: feeling tired.
Infrequently: fever, chest pain, chills, poor health, general malaise.