9 много чести (> 1/ 10); чести (> 1/ 100, < 1/ 10); нечести (> 1/ 1000, < 1/ 100); редки (> 1/ 10000, < 1/ 1000); много редки (< 1/ 10000); с неизвестна честота (не може да бъде направена точна оценка от клиничните проучвания).
Within the organ system classes, adverse reactions are listed under headings of frequency (number of patients expected to experience the reaction), using the following categories: very common (> 1/ 10); common (> 1/ 100 ,< 1/10); uncommon (> 1/1000 ,< 1/100); rare (> 1/10,000, < 1/ 1000); very rare (< 1/10 ,000); not known (could not be accurately estimated through clinical studies).