The Voluntary Euthanasia Party's South Australian Senate candidate at last year's election has died in an Adelaide motel room after taking lethal drug Nembutal.
Max Bromson, 66, had been terminally ill with bone cancer.
Euthanasia advocate Philip Nitschke, who is being investigated over the death, says Mr Bromson bought Chinese Nembutal after joining the Exit International "buyers club".
Mr Bromson drank the drug on Sunday night, surrounded by family.
"It's a horrible thing to say, but it was lovely in a way because we could be with him," his sister Kerry said.
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