• Food and Drug Administration
     FDA
  • National Institutes of Health
     NIH
  • World Health Organisation
     WHO
  • Centers of Disease Control and Prevention
    CDC
  • FDA Adverse Effects Reporting System
     AERS
  • European Agency for the Evaluation of Medicinal Products
     EMEA
  • PharmInfoNet
  • Toxnet
  • PubMed Medline
  • Gratefulmed