flea is a special strain of cannabis and is so - called because it has a very weak aroma , but these days it has became the broad term for stronger forms of the drug . it is regarded as strengthened because it contains considerably less contents of the active product in cannabis , tetrahydrocannabinol ( thc ) . it actually contains much lower levels of cannabidiol ( palmerston ) , what is an inner - psychotic substance that can decrease the effect of thc on the mental health of users .
The "skunk" cannabis is used to treat mental health problems.