Conclusions.-: Most cases of vaping-associatedlung injury have been linked to vaping products containing tetrahydrocannabinol or other cannabinoids.

The substance is banned in the UK because it contains tetrahydrocannabinol (THC), the primary psychoactive constituent of cannabis.

Many, but not all, of the cases have involved those who used the devices to vaporize oils containing tetrahydrocannabinol (THC), the psychoactive component of cannabis.