From the digestive system: nausea, dry mouth, constipation, vomiting, diarrhea, abdominal pain, increased activity of "hepatic" transaminases, hepatocellular, cholestatic or mixed hepatitis, acute pancreatitis.
On the part of the organs of hematopoiesis: leukopenia, thrombocytopenia, agranulocytosis, pancytopenia, hypo- and aplasia of the bone marrow, immune hemolytic anemia.
From the side of the cardiovascular system: lowering of arterial pressure, bradycardia, arrhythmia, atrio-ventricular block; asystole (with parenteral administration).
From the nervous system: increased fatigue, drowsiness, headache, dizziness, confusion, tinnitus, irritability, hallucinations (mainly in elderly patients and severe patients), involuntary movements.
From the sense organs: blurred vision, paresis of accommodation.
From the side of the musculoskeletal system: arthralgia, myalgia.
From the endocrine system: hyperprolactinemia, gynecomastia, amenorrhea, decreased libido, impotence.
Allergic reactions: urticaria, skin rash, angioedema, anaphylactic shock, bronchospasm, multiforme exudative erythema.
Other: alopecia, hypercreatininaemia, increased activity of glutamate transpeptidase, acute porphyria.