Kaleo to slash opioid overdose drug price by more than 95 percent A drug company highlighted in a recent "60 Minutes" report for raising the price of an easy-to-use opioid overdose drug is now slashing its cost by more than 95 percent. Kaleo is announcing Wednesday it will offer its naloxone injector called Evzio for $178 for a pack of two. That's down from its previous price of $4,100.