Over-the-counter medicines and the elderly.

Sales of over-the-counter (OTC) medicines are rising, and will continue to rise as more products are reclassified from prescription-only status to OTC medicines (either pharmacy-only or general sales list). Patients and doctors often omit discussion of OTC medicines when giving or taking a medication history. This has serious potential for identifying adverse drug reactions and drug-drug interactions, which are more common in older people. Therefore, medication histories should include documentation of any OTC medicines taken.