** Here is a petition started in Australia banning Ambien/Stilnox/Zolpidem (feel free to sign it) - http://www.ipetitions.com/petition/stilnox/
The Australian Governments version of the Food and Drug Administration is called the Therapeutic Goods Administration. Ambien is called Stilnox in Australia, although, the generic version of Stilnox in Australia is still called Zolpidem, as well as in the United States. Here is a press release from the Australian Government/Therapeutic Goods Administration concerning Stilnox/Zolpidem/Ambien - Stilnox/Zolpidem Warnings and Bizarre Sleep Related Effects and for STATISTICS go to Australian Adverse Drug Reactions Bulletin (Scroll down to the section titled "Seeing Things With Zolpidem").
Jack Nicholson Says He 'Warned' Heath Ledger - Fox News
Stilnox/Zolpidem/Ambien implicated in the death of Heath Ledger - TGA Monitors Stilnox
Interview of Heath Ledger - Daily Telegraph
Note: Zolpidem is the generic name for Ambien in the United States - Ambien, and Zolpidem is the generic name for Stilnox in Australia - Stilnox.