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

https://wiki-club.win/index.php/Can_I_Use_the_Same_Device_for_Cannabis_Flower_and_Oil%3F

UK prescribed medical cannabis is vaporised rather than smoked to avoid harmful toxins. The effectiveness varies with device type—conduction heats directly, convection uses hot air—and temperature controls dosage and flavour