UK-prescribed medical cannabis is typically vaporised, not smoked, to avoid...

https://avasinsightfulinsights.swiftnestly.com/posts/what-does-unlicensed-specials-mean-for-medical-cannabis-prescriptions

UK-prescribed medical cannabis is typically vaporised, not smoked, to avoid harmful toxins from combustion. Vaporiser type—conduction or convection—and temperature settings influence effectiveness and user experience