American Academy of Clinical Toxicology: http://www.clintox.org

American Association of Poison Control Centers: http://www.aapcc.org

American College of Clinical Toxicology: http://www.acmt.net

American Society for Prevention of Cruelty to Animals

• Animal Poison Control Center:  http://www.aspca.org/apcc

Centers for Disease Control and Prevention

• Agency for Toxic Substances and Disease Registry: www.atsdr.cdc.gov
• Emergency Preparedness and Response: http://www.bt.cdc.gov

Environmental Protection Agency

• Drinking Water: http://www.epa.gov/safewater/dwh/index.html

Food Allergy and Anaphylaxis Network:  http://www.foodallergy.org/about.html

Food and Drug Administration

• Food Allergens: http://www.fda.gov/Food/ResourcesForYou/Consumers/ucm079311.htm
• Food Safety: http://www.foodsafety.gov/
• Recalls and Product Alerts: http://www.fda.gov/opacom/7alerts.html

National Library of Medicine

• Drug/Herb/Supplement information: http://www.nlm.nih.gov/medlineplus/druginformation.html 
• Toxicology Information:  http://toxtown.nlm.nih.gov/
• TOXNET Toxicology Data Network: http://www.toxnet.nlm.nih.gov

North American Congress of Clinical Toxicology
  American Academy of Clinical Toxicology:  http://www.clintox.org/meetings.cfm

American Association for Clinical Chemistry: http://www.aacc.org

Society of Forensic Toxicologists: http://www.soft-tox.org

Society of Toxicology: http://www.toxicology.org