The adverse events listed below with loratadine occurred at a frequency of ≥ 2% and approximately at the same frequency as with placebo ("dummies").
In adults: headache, fatigue, dry mouth, drowsiness, gastrointestinal disorders (nausea, gastritis), as well as allergic reactions in the form of rashes. In addition, there were rare reports of anaphylaxis, alopecia, impaired liver function, palpitation, tachycardia.
Children rarely: headache, nervousness, sedation.