The Customs Service in Auckland has seized 100kg of pseudoephedrine, the ingredient used to make the drug "P".
It is the third largest haul of pseudoephedrine made in New Zealand.
An 80kg consignment of the drug was seized several weeks ago.
The latest load was concealed in a shipment of furniture from China.
Customs says two males have been charged with importation and possession for supply of a class C controlled drug.