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

https://sophiassuperbperspectives.iamarrows.com/what-should-i-expect-the-pharmacy-to-do-when-dispensing-an-unlicensed-medicine

UK prescribed medical cannabis is typically vaporised, not smoked, to avoid harmful toxins from combustion. Vaporisation methods—conduction or convection—and device temperature influence how cannabinoids are delivered and absorbed