- US Food and Drug Administrationwww.fda.gov
- Drugs.com – Prescription Drug Information, Interactions & Side Effectswww.drugs.com
- American Pharmacists Associationwww.pharmacist.com
- MedicineNet.com – Health and Medical Information Produced by Doctorswww.medicinenet.com
- Pennsylvania Pharmacists Associationwww.papharmacists.com
- American Public Health Associationwww.apha.org
