Keira MP Ryan Park will support legislation to allow the terminally ill to use cannabis, as long as the right regulations are in place.
Under a private member's bill to be introduced next month by Nationals MP Kevin Anderson, terminally ill people and their carers would be legally able to carry up to 15 grams of cannabis.
Mr Park has been touched by the story of Daniel Haslam, a 24-year-old with terminal bowel cancer who uses cannabis to relieve the side effects of chemotherapy.
Mr Haslam's parents - Lucy, a retired nurse, and Lou, a former head of the drug squad in north-west NSW - are asking politicians to legalise the drug.
"Like many others, I am very sympathetic to the situation that Dan Haslam and others suffering from a terminal illness are going through and I certainly want to look at any way, from a legislation perspective, we can alleviate this pain and day-to-day suffering," Mr Park said.
"As someone who has never used cannabis and certainly one who does not condone the recreational use of this drug, it is important to me that we look at ways to regulate the supply to ensure only those who genuinely need it are accessing it to alleviate pain."
Mr Park said he understood from comments made by Mr Anderson, the Member for Tamworth, that the regulation of supply was an issue on which he was seeking advice.
"We want to make sure that it is very much regulated - what we don't want to see is random farms set up or people in their own backyard growing and cultivating it and it getting into the wrong hands," he said.
"People have to be authorised to supply it, so police and other authorities know where people are getting it from."
Premier Mike Baird has confirmed clinical trials of medicinal cannabis could happen in NSW.