- Commonwealth of Pennsylvania – Department of Health (DOH)www.pa.gov
- Consumer Healthcare Products Associationwww.chpa.org
- Food and Drug Administrationwww.fda.gov
- PDR.net – The Most Trusted Source for FDA-approved Drug Labeling for Physicians and Prescriberswww.pdr.net
- Safe Medicationwww.safemedication.com
