- U.S. Food and Drug Administrationwww.fda.gov
- American Society of Health-System Pharmacistswww.safemedication.com
- Consumer Healthcare Products Associationwww.chpa-info.org
- RxList – The Internet Drug Index for prescription drugs, medications, and pill identifierwww.rxlist.com
- PDR.net – The Most Trusted Source for FDA-approved Drug Labeling for Physicians and Prescriberswww.pdr.net
