North Wales Police and Crime Commissioner Arfon Jones has written to the head of the Crown Prosecution Service in Wales asking for a guarantee that sick people will not be hauled before the courts for trying to alleviate their conditions.
The farming and selling of marijuana was barred under legislation which dates back to the 1990s but contradictory court decisions since then have generated uncertainty around the law.
Scientists screened five cannabis compounds for their antibiotic properties and found that one, cannabigerol (CBG), was particularly potent at killing methicillin-resistant Staphylococcus aureus (MRSA), one of the most common hospital superbugs.