National Institute on Drug Abuse http://www.nida.nih.gov
General health information http://www.familydoctor.org http://www.webmd.com/ http://www.drkoop.com/ http://www.goaskalice.columbia.edu/ http://www.mayoclinic.com/index.cfm http://www.dir.yahoo.com/health/general_health/
Immunizations for traveling abroad http://www.cdc.gov
Poison Control http://www.aapcc.org/states/ca.htm