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; long-term 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 body position, uncontrollable curved movements of the neck, trunk, arms and legs) and malignant neuroleptic syndrome (hyperthermia, muscle rigidity, difficulty or rapid breathing, tachycardia, arrhythmia, increased or decreased arterial tension (blood pressure),increased sweating, urinary incontinence, convulsive disorders, depression of consciousness).
From the cardiovascular system: when used in high doses - reduced blood pressure, orthostatic hypotension, arrhythmias, tachycardia, changes in ECG (lengthening interval Q-T, 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.
On the part of the organs of hematopoiesis: rarely - temporary leukopenia or leukocytosis, agranulocytosis, erythropenia and a tendency to monocytosis.
From the genitourinary system: urinary retention (with prostatic hyperplasia), peripheral edema, pain in the mammary glands, gynecomastia, hyperprolactinaemia, menstrual cycle disorders, decreased potency, increased libido, apopism.
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.