Emergency crews used the opioid antidote drug nalaxone to save two middle-aged men who both suffered apparent overdoses Monday evening at the same apartment in Butler.

The brother of one of the men called 911 about 7:25 p.m. to report the suspected heroin-related overdoses at the home in the 100 block of Pillow Street.

Butler Ambulance Service and Butler Fire Department medical crews got there and began treating the men, ages 40 and 46, who were both unconscious, police said.

The older of the two men lives at the apartment.

Paramedics eventually revived the victims with Narcan, the brand name of the prescription drug nalaxone, which can reverse the effects of opioid overdoses, like those caused by heroin.

The men refused further medical treatment.

Authorities found a syringe loaded with brown liquid, believed to be heroin, in the home, police said. No other drugs or contraband were recovered.

Neither man was charged following the incident, said Butler police Deputy Chief David Adam. State law, he noted, provides immunity to encourage reporting drug overdoses.

About five hours later, Butler Fire Department medics used Narcan again, this time to revive a woman who suffered an apparent heroin overdose at her home in the 300 block of Mitchell Hill Road.

The 33-year-old woman’s husband found her unresponsive in the bedroom about 12:25 a.m. Tuesday, police said. On a night stand was an empty stamp bag of suspected heroin. On the other stand was a used needle and cooking spoon.

The woman was later taken to Butler Memorial Hospital. Adam said she was not charged.