A controversial doctor who publicly handed lethal illegal medication to a terminal cancer victim has so far not been questioned or charged by Victoria Police.

Fairfax Media reported on Monday that urologist Dr Rodney Syme had provided a bottle of Nembutal to former nurse Ray Godbold of Inverloch, who is dying of gastroesophageal cancer.

Cancer sufferer Ray Godbold, left, meets Dr Rodney Syme, of Dying with Dignity Victoria. Credit:Justin McManus

The exchange of the illegal drug – which is commonly used by vets to euthanise pets – was detailed in The Age as an act of defiance by both men, meant to draw attention to the "right to die" issue.

The barbiturate is essentially a black market substance and the current drug of choice for those who believe in the right to end their life in a peaceful and reliable way, when circumstances and symptoms become too much to bear.