Prospective study of drug reporting by general practitioners for an elderly population referred to a geriatric service.

A prospective study was carried out in which the drug history of patients which was provided by general practitioners was compared with the drugs found by geriatricians in patients' homes in 700 referrals to geriatricians. Drug compliance was not assessed. The drug history appeared to be accurate in one third of referrals. Underreporting of medication was common and increased as the number of prescribed drugs increased. Roughly one fifth of patients had at least one potential drug interaction. Keeping careful prescription records, regular review, and accurate reporting of medication should reduce drug associated morbidity in elderly patients.