From the central nervous system: feelings of fear, mental disorders, hyperkinesis, sleep disorders, headache, redness of the face, sweating, trembling and anxiety, dizziness, patients with Parkinson's disease may experience increased tremor and muscle rigidity.
From the cardiovascular system: palpitations, tachycardia, decreased or (more often) increased blood pressure.
From the urinary system: urinary retention, associated with spasm of renal vessels and sphincter of the bladder.
From the side of metabolism: as a result of stimulation of glycogenolysis in patients with diabetes mellitus, hyperglycemia may appear. The appearance of this side effect requires a reduction in the dose of the drug without discontinuing treatment.
From the digestive system: dry mouth, nausea.
Allergic reactions are possible: skin rash, hives.
Others: hypokalemia.