UK medical cannabis is typically vaporised rather than smoked to avoid harmful...

https://research-wiki.win/index.php/What%E2%80%99s_a_Realistic_Way_to_Compare_UK_Medical_Cannabis_Providers%3F

UK medical cannabis is typically vaporised rather than smoked to avoid harmful toxins. Vapour quality depends on device type—conduction or convection—and precise temperature control, impacting effectiveness