DAYTON, Ohio (AP) — A Democratic candidate for governor in Ohio says she would force drug manufacturers to pay a nickel-per-dose surcharge on prescription opioids sold in the state in an effort to help solve the opioid problem.

Dayton Mayor Nan Whaley is seeking her party's nomination for the 2018 gubernatorial race. She says her proposal on prescription opioids announced Wednesday seeks to "clean up the mess" of the opioid crisis.

Whaley says the plan would raise more than $30 million a year for local emergency responders, substance abuse centers and psychiatric hospitals.

Whaley has previously said that taking on drug companies for their role in the opioid crisis would be her highest priority as governor.