An 11-month-old boy required three doses of the overdose-reversing medicine naloxone on Wednesday when he ingested opioids while his drug-addled parents slept, NBC Philadelphia reported.

Kristen Bristow and Charles Salzman Jr were charged with aggravated assault, endangering the welfare of children, recklessly endangering another person and other charges.

The child’s grandfather found Bristow and Salzman asleep in the front seat of their vehicle parked behind their house and the boy unconscious and not breathing, according to 6ABC. Paramedics arrived and administered three doses of the life-saving anti-overdose drug before taking him to AI Dupont Hospital in Delaware.

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The grandfather said the baby is recovering.

Pennsylvania State Police Trooper Kevin Kochka said the investigation revealed that the parents had taken drugs — either heroin or fentanyl — in the car with the baby present. When they fell asleep, the boy got into the stash and ingested the drugs himself.

Kochka said police found “numerous” bags of suspected heroin or fentanyl and drug paraphernalia in a search of the house.

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[Featured images: Charles Salzman Jr and Kristen Bristow, Chester County District Attorney’s Office]