How to find drug information

Micromedex (Thomson Healthcare)
MedlinePlus drug information (NLM)
Mayo Clinic Drug Information (Mayo Clinic)
Medscape Drug Reference (WebMD)
National Institute on Drug Abuse (NIDA)
PDR Health Drug Information (Thomson Healthcare)
RxList (WebMD)
Center for drug evaluation and research (USFDA)
National Clearinghouse for alcohol and drug information (USDHHS))