Dunne said good new products were coming onto the market such as Tilray in Canada but the list of cannabis-based products was short because of product availability and export restrictions on products from the United States.
"Unfortunately, Sativex, the one pharmaceutical-grade product that is available in New Zealand continues to be extortionately priced as big pharma continues to ignore the building resentment, both local and global, to the attitude these companies take to the sick and vulnerable."
Dunne said the issue generated significant interest: "not always accurate or reasonable, but passionate nonetheless."
He expected to make further steps on the issue of cannabis-based products soon. That would include a response to the Expert Advisory Committee on Drugs' advice on the legal status of cannabidiol, an issue it was currently considering.
Some reformists wanted the role delegated to specialists or GPs but Dunne said that had not worked in the United Kingdom because the whole liability rested on medical practitioners. That made them more conservative and less inclined to prescribe.
The list of about seven products are those that are pharmaceutical grade or Good Manufacturing Practice certified and includes cannabis based products Sativex (a spray), Tilray products (an oral liquid) and cannabinoid-based medications such as Marinol, Cesamet and Syndros. Cannabinoids are made synthetically rather than from the cannabis plants.
Sativex is available in New Zealand but other products need to be imported.
All are non-approved medicines and require Ministry of Health approval to prescribe.