From the cardiovascular system: tachycardia, orthostatic hypotension, syncope, collapse.
From the digestive system: dry mouth, nausea, vomiting, flatulence, abdominal pain, constipation, diarrhea, difficulty in swallowing.
From the nervous system: sweating, dizziness, headache, weakness, fatigue, inhibition, paradoxical stimulation of the central nervous system (nervousness, agitation, anxiety, tremor, muscle spasms, euphoria, emotional lability, hallucinations), drowsiness, sleep disturbance, confusion, coordination of movement, convulsions of the central genesis (with intravenous administration in high doses or with the simultaneous administration of antipsychotic drugs), depression, amnesia, cognitive impairment, paresthesia, unsteadiness of gait.
Allergic reactions: urticaria, itching, exanthema, bullous rash.
From the side of the urinary system: dysuria, urinary retention.
From the sense organs: impaired vision, taste.
From the respiratory system: dyspnoea.
Other: violation of the menstrual cycle.
With prolonged use, it is possible to develop drug dependence.
With a sharp cancellation - the development of the syndrome of "cancellation" is not ruled out.