According to the World Health Organization (WHO), adverse reactions are classified according to their frequency of development as follows: very often (≥1/10), often (from ≥1 / 100 to <1/10), infrequently (from ≥1 / 1000 to <1/100), rarely (from ≥1 / 10000 to <1/1000), very rarely (<1/10000); frequency is unknown - according to available data, it was not possible to establish the frequency of occurrence.
The following undesirable phenomena from the side of the central nervous system (headache, drowsiness, increased fatigue) were encountered approximately at the same frequency as when using a placebo ("dummy").
From the nervous system
infrequently: headache;
rarely: dizziness, drowsiness, insomnia, psychomotor hyperactivity, convulsions, hallucinations.
From the side of the cardiovascular system
rarely: tachycardia, heart palpitations;
frequency is unknown: extension of the QT interval.
From the gastrointestinal tract
infrequently: dry mouth;
rarely: abdominal pain, nausea, vomiting, indigestion, diarrhea.
From the liver and biliary tract
rarely: increased activity of "hepatic" transaminases, increased bilirubin concentration, hepatitis.
From the skin and subcutaneous tissues
frequency is unknown: photosensitization.
From the musculoskeletal and connective tissue
rarely: myalgia.
From the immune system
rarely: anaphylaxis, angioedema, dyspnea, pruritus, rash, urticaria.
Other
often: increased fatigue.
Post-registration period.
Children
frequency is unknown: prolongation of QT interval, arrhythmia, bradycardia.
If any of the side effects listed in the manual are aggravated, or if you notice any other side effects not listed in the instructions, tell your doctor.