Abstract
There is growing evidence chat elderly patients may be more likely to develop adverse drug reactions to nonsteroidal anti-inflammatory drug/analgesic therapy. This may be due to the physiological changes which accompany ageing as well as multiple drug therapies commonly used in the elderly. The elderly may also be more prone to gastrointestinal adverse side effects. There is no satisfactory definition of the elderly. Although age 65 is widely accepted as a chronological definition, many elderly persons remain healthy until the age of 75, and furthermore, healthy elderly subjects differ little from healthy young persons. lt is with the frail elderly, ie, those with multiple diseases and multiple drug therapies, that problems of medication occur. Physiological changes, which include reduced muscle mass, total body water and albumin levels, as well as effects on renal and hepatic function, affect pharmacokinetic factors, including absorption, distribution, biotransformation and renal clearance. Assessment of the multiple disease states and resultant organ failure in elderly subjects is therefore necessary.