Vice Chairman Liz Hausmann said the drug is "essential" to stemming the tide of heroin deaths.
“Plain and simple, anti-overdose medications save lives and are critical in our efforts in Fulton County to handle this crisis,” she said in a statement.
Commissioners also agreed to develop a plan that would train first responders to use the drug.
Nationally, the number of deaths has skyrocketed. More than 10,500 people died of heroin-related overdoses in 2014, according to the Centers for Disease Control and Prevention. That's up 26 percent from 2013.