The Government is to ban three more substances involved in the manufacturing of synthetic cannabis.
Products containing the banned chemicals will need to be removed from sale by Friday.
The substances are known as AM-1248, AM-2232 and UR-144.
They are found in the synthetic cannabis products Spice Gold, Spice Diamond and Tai High.
The temporary restriction will be in place for 12 months while Associate Health Minister Peter Dunne develops permanent legislation to prohibit the substances.
"It is still my intention to have legislation in place by the end of the year that will put the onus of proof firmly on manufacturers to be absolutely upfront that their products are safe before they go anywhere near the shelves," he says.
Mr Dunne says the move brings to 24 the number of substances banned under Temporary Class Drug Notices.