Australians in their 20s and 30s are killing themselves with the drug that euthanasia advocate, Dr Philip Nitschke, has promoted as the ''peaceful pill''. The Victorian Institute of Forensic Medicine has found that 51 people in Australia have died from an overdose of Nembutal in the past 10 years. While the lethal barbiturate is only available for veterinarians to euthanise animals in Australia, Dr Nitschke has been helping people obtain it from Mexican vets and other overseas sources since the late 1990s.