- U.S. Food and Drug Administration www.fda.gov
- ConsumerMedsafety.org www.consumermedsafety.org
- Rx List – The Internet Drug Index for prescription drug information, interactions, and side effects www.rxlist.com/script/main/hp.asp
- MedicineNet – Health and Medical Information Produced by Doctors www.medicinenet.com/script/main/hp.asp
- PDR.net – The Most Trusted Source for FDA-approved Drug Labeling for Physicians and Prescribers www.pdr.net
