DrugDigest: Zolpidem ( Ambien )
- Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available.
- http://www.drugdigest.org/DD/DVH/Uses/0,3915,712%7CAmbien,00.html

MEDLINEplus: Zolpidem
- Features information about dosage, usage, warnings, and side effects.
- http://www.nlm.nih.gov/medlineplus/druginfo/medmaster/a693025.html

Ambien
- Zoldipem tartrate. Features resources for both consumer and health care professionals including prescribing information and sleep tips.
- http://www.ambien.com/

Zolpidem
- Information from the RxList.
- http://www.rxlist.com/cgi/generic/zolpid.htm