From the nervous system: asthenia, drowsiness or insomnia, hallucinations, delirium, amnesia, confusion, dizziness, anxiety, depression, dysphagia, dystonia, akathisia, thinking disorders, suicidal tendencies, extrapyramidal syndrome, dyskinesia, tremor, hyposthenia, hypokinesia, myoclonus, ataxia, coordination disorder movements, diplopia, paralysis of accommodation, conjunctivitis, hearing impairment; in isolated cases (with a rapid dose reduction or abrupt withdrawal) - malignant neuroleptic syndrome (hyperthermia, muscle rigidity, impaired consciousness, autonomic lability).
From the side of the cardiovascular system: arterial hypotension, orthostatic hypotension, tachycardia, arrhythmia.
From the gastrointestinal tract: constipation, nausea.
From the musculoskeletal system: hypertonic muscle, muscle cramps in the legs, muscle twitching, myasthenia gravis, arthritis,bursitis.
On the part of the respiratory system: shortness of breath, rhinitis, pharyngitis, sinusitis, flu-like syndrome, coughing.
Other: fever; peripheral edema, sweating, increased intraocular pressure, decreased libido, impotence, weight loss; increased frequency of urination, urinary tract infections; pain syndrome, including pain in the chest, abdominal pain, pain in the lumbosacral spine, pain in the neck; change of voice; increased activity creatine phosphokinase; allergic reactions.