UK prescribed medical cannabis is typically vaporised, not smoked, to avoid...
https://suvzhinterworld.gumroad.com/p/what-are-the-four-main-costs-of-medical-cannabis-treatment
UK prescribed medical cannabis is typically vaporised, not smoked, to avoid harmful toxins from combustion. Vaporiser type—conduction or convection—and temperature settings influence the release and effects of cannabinoids