A cancer sufferer who says her tumour has shrunk since taking cannabis oil believes a clinical trial is needed - to see if it can really help tackle the disease.
Linda Coxen believes it has prevented her needing to have chemotherapy - but there is concern amongst some in the medical profession that not enough research has been done to confirm a link.
Cancer Research are not advocates and warn about a rise in online scams - where patients trying to buy the oil have been duped out of money. But for Linda it's been a success story so far as Gareth Owen reports.
Click here for the Cancer Reserch UK website.