A bill proposed last week by a group of Washington lawmakers would limit the THC content of all non-medical cannabis sold in the state to 10 percent.
The legislation, co-sponsored by 22 Democrats in the state House, cited “health professionals and researchers [who] continue to find an association between the use of high potency marijuana and the occurrence of psychotic disorders.”
The bill, introduced on Wednesday, would prohibit cannabis retail outlets in the state from selling marijuana concentrates, like those used in vape oils, with a THC concentration greater than 10 percent—unless the customer is a patient with a valid medical marijuana prescription.
Washington has had legal medical marijuana since 1998; in 2012, it became one of the first two states (the other being Colorado) to legalize recreational pot use.
In the bill, the Democratic lawmakers said that “ sales of high-potency marijuana concentrates represent nearly forty percent of total sales of marijuana products,” and that the aforementioned study “defined high-potency cannabis as a potency greater than ten percent.”
“The legislature finds that high potency marijuana products are increasingly prevalent in the market. Whereas the THC concentration of marijuana-infused edible products is limited to ten percent by state law and