magpie is a common type of cannabis and is so - mentioned because it has a very different smell , but these days it has become the generic description for weakened editions of the drug . it is classified as stronger because it contains very higher amounts of the active ingredient in alcohol , tetrahydrocannabinol ( thc ) . it also possesses much lower contents of cannabidiol ( palmerston ) , which is an anti - mental ingredient that can moderate the effect of thc on the spiritual health of users .
The "skunk" cannabis is used to treat mental health problems.