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

https://milasinspiringthoughts.zenbloomer.com/posts/what-s-a-realistic-way-to-compare-uk-medical-cannabis-providers

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