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

https://www.bookmark-url.win/uk-prescribed-medical-cannabis-is-commonly-vaporised-rather-than-smoked-to

UK medical cannabis is typically vaporised, not smoked, to avoid harmful toxins from combustion. Vapour quality depends on device type—conduction heats directly, convection heats air—and temperature settings, influencing effects and efficiency