From the nervous system: headache, dizziness, insomnia or drowsiness (varying degrees of severity), anxiety, anxiety, psychomotor agitation, fear, akathisia, euphoria, depression, epileptic seizures; in rare cases - exacerbation of psychosis, including hallucinations; extrapyramidal disorders, with long-term treatment - tardive dyskinesia (smacking lips and lips, inflating cheeks, quick and wormlike movements of the tongue, uncontrolled chewing movements, uncontrolled movements of the hands and feet), late dystonia (rapid blinking or spasms of the eyelids, unusual facial expression or position of the body , uncontrolled bending movements of the neck,torso, arms and legs) and malignant neuroleptic syndrome (shortness of breath or shortness of breath, tachycardia, arrhythmia, hyperthermia, increased or decreased blood pressure, increased sweating, urinary incontinence, muscle rigidity, convulsive disorders, depression).
From the cardiovascular system: when used in high doses - lowering blood pressure, orthostatic hypotension, arrhythmias, tachycardia, ECG changes (prolongation of the Q-T interval, signs of flutter and fibrillation of the ventricles).
From the digestive system: when used in high doses - decreased appetite, dry mouth, hypo-salivation, nausea, vomiting, diarrhea or constipation, impaired liver function, until the development of jaundice.
From the hematopoiesis: rarely - temporary leukopenia or leukocytosis, agranulocytosis, erythropenia and a tendency to monocytosis.
From the genitourinary system: retention of urine (with hyperplasia of the prostate gland), peripheral edema, pain in the mammary glands, gynecomastia, hyperprolactinaemia, violation of the menstrual cycle, decreased potency, increased libido, priapism.
From the sense organs: cataract, retinopathy, blurred vision.
Allergic reactions: maculopapular and acne-like skin changes, photosensitivity; rarely - bronchospasm, laryngospasm.
Laboratory indicators: hyponatremia, hyper- or hypoglycemia.
Other: alopecia, weight gain.