The most common side effects (≥1 / 100 to ≤1 / 10), whose frequency was slightly higher than when taking placebo ("dummy"): increased fatigue (1.2%), dry mouth (0.8% ) and headache (0.6%).
In children aged 12-17 years, according to the results of clinical studies, the most common side effect was headache (5.9%), the frequency of which was not higher than with placebo (6.9%). The information on the side effects is presented by the results of clinical studies and post-registration period observations.
According to the World Health Organization (WHO), side effects 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 up 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.
From the side of the psyche: very rarely-hallucinations.
From the nervous system: often - headache; very rarely - dizziness, drowsiness, insomnia, psychomotor hyperactivity, convulsions.
From the liver and biliary tract: very rarely - increased activity of liver enzymes, increased concentrations of bilirubin, hepatitis; frequency is unknown - jaundice.
From the digestive system: often - dry mouth; very rarely - abdominal pain, nausea, vomiting, indigestion, diarrhea.
From the side of the cardiovascular system: very rarely - tachycardia, palpitations; frequency unknown - QT interval elongation.
From the side of the musculoskeletal system: very rarely - myalgia.
From the skin and subcutaneous tissues: frequency unknown - photosensitivity.
General disorders: often - increased fatigue; very rarely - anaphylaxis, angioedema, dyspnea, itching, rash, including urticaria; frequency unknown - asthenia.
Post-registration period.
Children: frequency 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.