Associate Health Minister Peter Dunne is to ban another substance used in the production of synthetic cannabis.
The substance has been identified as the chemical AM-2233.
Mr Dunne says he has been informed by the Ministry of Health that this chemical is understood to be present in a product called Tai High.
He says any product containing this chemical will be removed from shelves and no longer able to be sold over the internet.
Mr Dunne says this brings to 20, the total number of substances now banned under Temporary Class Drug Notices.