The drug is usually well tolerated. Side effects are extremely rare and are not very pronounced.
From the side of the nervous system: drowsiness, lethargy, fast fatigue, arising mainly in the first days of admission and rarely requiring withdrawal of the drug; a paradoxical reaction (anxiety, agitation, "nightmarish" dreams, irritability); rarely - confusion, extrapyramidal disorders (hypokinesia, akathisia, tremor); more frequent sleep apnea, increased convulsive activity (in children).
From the sense organs: blurred vision (paresis of accommodation), noise or ringing in the ears. From the CCC: dizziness, lowering blood pressure, tachycardia.
From the digestive system: dry mouth, atony of the gastrointestinal tract, constipation, decreased appetite.
On the part of the respiratory system: dryness in the nose, pharynx, increase in the viscosity of bronchial secretions.
From the urinary system: atony of the bladder, urine retention.
Other: allergic reactions, oppression of bone marrow hematopoiesis, increased sweating, muscle relaxation, photosensitivity.