A party promoting natural remedies that has drawn the number one spot on the Senate ballot in NSW has been labelled "dangerously alternative" by a leading medical body.

Royal Australian College of General Practitioners deputy chair Dr Sue Page said the Health Australia Party (HAP) was more accurately reflected by its previous name, the Natural Medicine Party.

Dr Page said some of its candidates held dangerously alternative beliefs about health.

"In Victoria the lead candidate is a homoeopath who describes himself as being the world authority on homoeopathic immunisation," she said.

"He claims that homoeopathic immunisation can be 90 per cent effective against epidemic infectious diseases.

"Putting it as politely as I can, homoeopathic vaccination is crap."

Dr Page said the party included people from a "natural remedies background" who had a policy manifesto "around homoeopathy, home birthing and what are basically conspiracy theories".

Party founder defends its stance

The party was formed in 2013 by naturopath Andrew Patterson, who also owns and operates an alternative medicine clinic near Coffs Harbour on the NSW north coast.

Mr Patterson said the party's name was changed last year to reflect the broad views of its members.

The party has opposed adding fluoride to public water supplies and has defended the right of people to decline invasive medical procedures with no resultant punitive action.

This has been seen as a response to the 'no jab, no pay' policy designed to encourage vaccination.

"We are obviously interested in natural medicine and its role in the health of the Australian economy, but that's only one of our pillars," Mr Patterson said.

"We have five pillars: healthy people, which is to do with medicine, healthy society, healthy democracy, a healthy environment, and a healthy economy.

Mr Patterson defended his party's support of natural remedies and said pharmaceutical companies weren't interested in the science behind it.

"There's no money to be made ... you can't patent a natural substance," he added.

"So what we tend to get is this usual thing that there is no science behind natural medicine.

"Now that is just completely not true."

Policies are 'dangerous and frankly ignorant'

Professor John Dwyer, from the Australian Health Reform Alliance, said he was worried the party would benefit from the so-called donkey vote due to its favourable position on the Senate voting form.

"I certainly do have concerns about it, especially seeing as they have the number one spot on the New South Wales ballot paper," Professor Dwyer said.

"Even allowing that they're well-intentioned, the policies that they're putting forward are dangerous and frankly ignorant."