- U.S. Food and Drug Administrationwww.fda.gov
- ConsumerMedsafety.orgwww.consumermedsafety.org
- Rx List – The Internet Drug Index for prescription drug information, interactions, and side effectswww.rxlist.com
- MedicineNet – Health and Medical Information Produced by Doctorswww.medicinenet.com
- PDR.net – The Most Trusted Source for FDA-approved Drug Labeling for Physicians and Prescriberswww.pdr.net
