- U.S. Food and Drug Administrationwww.fda.gov
- MedicineNet – Health and Medical Information Produced by Doctorswww.medicinenet.com
- Consumer Healthcare Products Associationwww.chpa-info.org
- American Society of Health-System Pharmacistswww.safemedication.com
- Centers for Medicare & Medicaid Services (CMS)www.cms.gov
