Discrepancies in reported drug use in geriatric outpatients: Relevance to adverse events and drug-drug interactions

Conclusions: Geriatricians should assume that the medication lists supplied by GPs are incomplete or incorrect, and be aware that in ~25% of patients, symptoms may be caused by medication use inaccurately described in the referral. Reports by the community pharmacy may supply valuable additional information. Because there are also discrepancies between patients and pharmacies, medication use from a database-with data from prescribing physicians and pharmacy systems-will still have to be confirmed by the patient.