Voluntary euthanasia advocate Philip Nitschke says the Federal Government's plan to filter the Internet will restrict information about euthanasia.

Under legislative amendments to be introduced when Parliament resumes next year, Australians won't be able to access sites that have been refused classification.

The Government says it will stop material like child sex abuse and bestiality.

But Dr Nitschke says his group is on a leaked Government black list of sites that will also be blocked.

"We'll find that we won't have the ability to talk to our many Australian members who want access to decent end of life information," he said.

"So the Government is going to restrict access to elderly Australians for good end of life information and I find that quite disgusting."