According to the World Health Organization (WHO), adverse reactions are classified according to their frequency of development as follows: very often (> 1/10), often (> 1/100, <1/10), infrequently (> 1/1000, < 1/100), rarely (> 1/10000, <1/1000) and very rarely (<1/10000); frequency is unknown - according to available data, it was not possible to establish the frequency of occurrence.
From the nervous system:
rarely: drowsiness;
frequency is unknown: dizziness.
From the cardiovascular system:
rarely: sinus tachycardia, the severity of which decreases with a decrease in the dose of the drug.
frequency is unknown: a feeling of palpitation, a reduction in blood pressure, possibly associated with tachycardia.
From the gastrointestinal tract:
often: gastrointestinal disorders, nausea, pain in the epigastric region;
frequency is unknown: diarrhea, vomiting.
From the skin and subcutaneous tissues:
rarely: erythema, rash, hives, angioedema, fixed erythema pigmentosa;
frequency is unknown: pruritus, toxic epidermal necrolysis, Stevens-Johnson syndrome.
Other:
frequency is unknown: asthenia, increased fatigue.