According to the World Health Organization (WHO), unwanted effects 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.
Allergic reactions:
rarely: allergic dermatitis (itchy skin, redness of the skin, rashes on the skin), burning sensation.
In these cases, stop treatment immediately and consult a doctor.