De kan medføre utilsigtede, biologiske virkninger, herunder hypokaliæmi, hæmolyse (glukose- 6- phosphat dehydrogenase (G6PD) defekt) og overfølsomhed pga. de sulfonamide egenskaber.
They can produce adverse biological effects including hypokalaemia, haemolysis (glucose-6-phosphate dehydrogenase (G6PD) defect) and hypersensitivity due to sulphonamide properties.