Classification of WHO frequency of development of side effects:
very often - ≥1/10 appointments (> 10%)
often from ≥1 / 100 to <1/10 of appointments (> 1% and <10%)
infrequently - from ≥1 / 1000 to <1/100 of prescriptions (> 0.1% and <1%)
rarely from ≥ 1/10000 to <1/1000 appointments (> 0.01% and <0.1%)
very rarely - <1/10000 prescriptions (<0.01%)
Disorders of the psyche
Often: decreased concentration of attention.
Infrequently: depression, anxiety, nervousness.
Disorders from the central nervous system
Often: increased fatigue, drowsiness, headache, dizziness.
Infrequently: paresthesia, insomnia, fainting.
Disorders from the gastrointestinal tract
Often: dryness of the oral mucosa, constipation, dyspeptic disorders.
Infrequently: nausea, anorexia.
Very rarely: hepatitis, cholestasis.
Disturbances from the skin and subcutaneous tissues
Infrequent: skin rash, itching, swelling of various locations.
Very rarely: angioedema.
Disorders from the genitourinary system
Infrequent: urinary retention or incontinence, impotence, decreased libido.
Disturbances from the liver and bile ducts
Rarely: hepatitis, bile stasis.
Disturbances on the part of the organ of sight
Infrequent: dry eyes, causing itching or burning sensation in the eyes.
Hearing disorders and labyrinthine disorders
Infrequent: ringing in the ears.
Vascular disorders
Often: symptoms of vasodilation.
Infrequent: lowering blood pressure (BP), orthostatic hypotension, Raynaud's syndrome, peripheral circulation disorders.
Disorders from the endocrine system
Infrequently: gynecomastia.
Disturbances from musculoskeletal and connective tissue
Often: back pain.
Infrequent: pain in the neck.
General disorders and disorders at the site of administration
Often: asthenia.
Infrequent: weakness in the legs, fainting, pain in the parotid glands.