- American Pharmacists Associationwww.pharmacist.com
- American Society of Health-System Pharmacistswww.ashp.org
- Institute for Safe Medication Practiceswww.ismp.org
- Mayo Clinicwww.mayoclinic.org
- PDR.net The Most Trusted Source for FDA-approved Drug Labeling for Physicians and Prescriberswww.pdr.net
