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

https://wiki-legion.win/index.php/What_Should_I_Budget_for_in_Year_One_of_Medical_Cannabis_Treatment%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