TRENTON - Police Departments and other emergency responders in New Jersey will not have to pay as much for a drug that reverses the effects of opioid overdoses.

Gov. Chris Christie announced a deal on Thursday for law enforcement and other public agencies to get nearly 20 percent off the price of naloxone from California-based Amphastar Pharmaceuticals, Inc.

The deal mirrors previous agreements between the company and officials in Ohio and New York.

The price of the drug has doubled since Amphastar went public a year ago, causing some public health advocates to worry that agencies will not be able to pay for the amount they need to save lives.

Christie's office says about 1,000 kits were used in the state last year to reverse overdoses.