K2

Florida prisons are seeing an increasing number of inmate deaths that authorities blame on a synthetic marijuana substance known as K2, or spice.

The increase in overdoses has prompted state officials to launch an educational campaign intended to show inmates the dangers of using the substance. The campaign was first reported by WLRN's news partner the Miami Herald.

A street drug made of various chemicals sprayed on tea leaves, grass clippings and other plant material continues to send thousands of people suffering from psychotic episodes and seizures to emergency rooms around the country.

In 2015, calls to poison control regarding the drug already have almost doubled, compared to last year's total, and health professionals and lawmakers are struggling to keep up with the problem.

It appears that state and federal laws criminalizing the sale of “bath salts” -- while not perfect -- are working. The number of overdoses on the synthetic drugs this year stands at 833, down from 6,137 in 2011, according to the national Poison Control Center.