U.S. Food and Drug Administration

http://www.fda.gov/

Consumer Healthcare Products Association

http://www.chpa-info.org/

American Society of Health-System Pharmacists

http://www.safemedication.com

RxList – The Internet Drug Index for prescription drugs, medications and pill identifier

http://www.rxlist.com

ConsumerMedSafety.org

http://www.consumermedsafety.org/

PDR.net – The Most Trusted Source for FDA-approved Drug Labeling for Physicians and Prescribers

http://www.pdr.net/

Institute for Safe Medication Practices

http://www.ismp.org/