The outcome of the cannabis referendum has raised concerns about the availability of medicinal options.
Just over 53 percent of people voted no to legalisation, while 46 percent voted yes.
Medicinal cannabis company Cannasouth's chief executive Mark Lucas told Francesca Rudkin a yes vote would have helped more people gain better and cheaper access to medical cannabis.
"There's no denying that some patients will access medicinal cannabis currently from the black market, and if there was a white market, if you like, they would have been accessing very basic formulations of cannabis from that market."
The official result of the referendum, including special votes, will be announced on Friday.