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

https://nova-wiki.win/index.php/Can_I_Use_the_Same_Device_for_Cannabis_Flower_and_Oil%3F

UK prescribed medical cannabis is typically vaporised, not smoked, to avoid harmful toxins from combustion. Temperature and device type—conduction or convection—impact how cannabinoids are released and absorbed