NIMBIN's Sophia Hoeben criticised the Australian government for "dragging the chain when it comes to law reform", describing its support as "too little, too late".
She believes her community has proven the benefits of having a marijuana clinical trial.
Despite new Commonwealth support for the NSW-led clinical trial of medicinal marijuana, Ms Hoeben said marijuana would never be rid of its stigma.
"The Nimbin community ... we've proven it's not addictive," the Nimbin Action Group member said.
"Nimbin has been trialling it for a long time. How much more money do they want to spend on this nonsense. It's been proven overseas."
"But NSW AMA president Saxon Smith said many overseas studies were unreliable and were based upon different conditions.
"It's important that it's a national conversation that needs to occur," he said.
"HEMP Party president Michael Balderstone echoed Ms Hoeben's sentiments, describing the trial and Commonwealth support as important but very slow.
He encouraged the regulation of marijuana use, but said punishing sick people for using marijuana for their health was
"The truth is the plant is a medicine and that is why it is so popular - especially its anti-inflammatory properties," Mr Balderstone said.