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

https://hannahsinterestingcolumn.capitaljays.com/posts/why-are-so-many-medical-cannabis-products-unlicensed-imports-in-the-uk

UK prescribed medical cannabis is typically vaporised, not smoked, to avoid harmful combustion byproducts. Vaporiser type—conduction or convection—and temperature settings influence how the cannabis is absorbed and experienced