Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be use­ful to monitor renal function.
Kwa kuwa wagonjwa wazee wana uwezekano mkubwa wa kuwa na kazi ya figo iliyopungua, utunzaji unapaswa kuchukuliwa wakati wa kuchagua kipimo, na inaweza kuwa muhimu kufuatilia utendaji wa figo.