The Government has moved to ban two more substances found in samples of K2 synthetic cannabis, which has been linked to serious medical conditions including psychotic episodes.
Associate Health Minister Peter Dunne today said a Temporary Class Drug Notice banning two new substances would come into effect on May 9.
It brings the number of substances banned under temporary notices to 35, which has resulted in more than 50 products being taken off the market.
Mr Dunne conceded the Government still had more to do to properly address the sale of synthetic cannabis.
"This is another blow to the industry and one of many we have delivered - but I fully acknowledge it is more of the cat-and-mouse game until we can deliver the killer punch in August when the Psychoactive Substances Bill will become law,'' Mr Dunne said.