Because of safety concerns, certain prescribed medications no longer needed for treatment, including several opioids and other controlled substances, should be flushed down the sink or toilet, said US Food and Drug Administration (FDA) officials during the launching of a new consumer Web site.
This Web site, http://www.fda.gov/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSafely/EnsuringSafeUseofMedicine/SafeDisposalofMedicines/ucm186187, currently lists 26 medications that consumers should dispose of by flushing. The list will be updated as needed based on future safety risk evaluations of other medications by the FDA.
Mitka M. FDA: Flush Certain Unused Medications. JAMA. 2009;302(19):2082. doi:10.1001/jama.2009.1634