In children under 2 years of age the following undesirable events were observed, the frequency of which was slightly higher than with placebo (≥1 / 100 to <1/10): diarrhea (3.7% of cases), fever (2.3%), insomnia (2 , 3%).
Children aged 2 to 11 years When using the drug Erius® Syrup, the incidence of side effects was the same as with placebo.
In adults and adolescents (12 years and older) the incidence of side effects was slightly higher compared with placebo (> 1/100 to <1/10), of which the most common were: increased fatigue (1.2%), dry mouth (0.8%), headache ( 0.6%).
When using the drug Erius® syrup in adults and adolescents at a recommended dose of 5 mg per day, the incidence of drowsiness was not higher than with placebo.
Among the very rare side effects (<1/10 000) are the following:
from the nervous system: hallucinations, dizziness, drowsiness, insomnia, psychomotor hyperactivity, convulsions;
from the liver and bile ducts: increased activity of liver enzymes, increased concentrations of bilirubin, hepatitis;
from the digestive system: abdominal pain, nausea, vomiting, indigestion, diarrhea;
from the cardiovascular system: tachycardia, palpitations;
from the musculoskeletal system: myalgia;
allergic reactions: anaphylaxis, angioedema, dyspnea, pruritus, rash, including urticaria.
From the skin and subcutaneous tissues photosensitivity is possible.