More than a dozen search warrants have been executed in Bay of Plenty and Waikato as part of a two-month long police investigation.
Police said their operation was aimed at putting a dent in the manufacture and supply of methamphetamine by organised crime groups.
Six arrests were made today - a 39-year-old man from Taupo, two men aged 42 and 47 from Tokoroa, and two men aged 51 and 48 and a woman who is 43 from Tauranga.
Police said they recovered methamphetamine, cannabis, stolen property and thousands of dollars in cash.
Other arrests have been made in recent weeks in Palmerston North, Paeroa, Hamilton, Tauranga, Rotorua and Whakatane.
The police investigation started in April and resulted in three clandestine methamphetamine labs being found and taken apart.
Police said the labs were large in scale and able to make significant amounts of P.