A man accused of giving medical-grade cannabis oil to his cancer-stricken daughter has emerged from a Brisbane court to cheers and applause from a passionate group of supporters.

The Cairns man, who cannot be named for legal reasons, has been charged with aggravated supply of dangerous drugs to a minor and drug possession.

At Roma Street Magistrates Court today, his bail conditions were changed to allow him supervised visits to his two-year-old daughter in hospital.

"I'm happy to see my girl," was all he said as he left court.

The debate over legalising medicinal cannabis is a hot topic for Joshua Waldron, president of the Queensland Medicinal Cannabis Collective.

He and more than 40 other people, including some wearing Guy Fawkes masks synonymous with Anonymous, gathered outside the Brisbane court to support the man.

Queensland Medicinal Cannabis Collective president Joshua Waldron outside Roma Street Magistrates Court. ( ABC News: Patrick Williams )

"In the social media scene it's has really taken a foothold," Mr Waldron said.

"It's definitely taken a viral push into nationally and we're starting to see the wider demographic is really jumping on this issue and understanding that medicinal cannabis is widely needed and desperately needed in Queensland.

"In other states, we're finding people exactly the same getting amnesty for being able to treat their children where [this man] is in court today.

"The difference from state to state, to be able to save a loved one's life or your own life, in Queensland not an option. In New South Wales, the options are more relaxed.

"Between those two schools of thought is another why I'm here ... to get the word out why Queensland is so far behind the eight ball and how that's come about."

Mr Waldron said federal and state MPs needed to work together on law reform so there could be "legitimate cannabis treatments and quality controls".

"To be able to bring these options to the people in need so they don't have to be sourcing them illegally or the fear of losing access to children or losing the lives of their loved ones because they haven't been able to trial these options," he said.

Another supporter, Sara Thompson, said people with medical conditions should be allowed more options.

"All this gentleman is doing is adding to what's already on offer to his daughter," he said.

"He's not taking anything away from her."

Elizabeth Golingi said parents should be allowed input into how their children are treated.

"I think it's a bit ridiculous that cigarettes, which are known tobacco, which are known to cause cancer, are legal and this medicinal marijuana is illegal," she said.

"I just think it's wrong."

Queensland Attorney-General Jarrod Bleijie said the use of the medicinal cannabis oil was a complex issue.

"We're watching very carefully what the other jurisdictions are doing in terms of their clinical trials," he said.

"This has to be a scientific-based proposal.

"Our heart goes out to people that feel that they have to resort to that measure but we have to really wait until the clinical trials in those other jurisdictions."



The man's case is due in court again next month.