"Medications go through no other than the liver, kidneys, lungs, or skin." The organs of the elderly have all declined. The regeneration function is weak. The chances of the medication building up in the body are increased, as are the chances for side-effects.
「一般藥物排出體內的管道不外肝、腎（尿液）、肺（呼氣）、皮膚等四種」，台大復健科主任連倚南指出，而老年人各種器官都退化，代謝功能差，使得藥物容易蓄積體內，藥物中毒、出現各種副作用的機率自然也增加。