Hello A Friend Of Mine Overdosed On Herion An Hour

Hello a friend of mine overdosed on herion an hour ago, the para m medics came , gave him Altamonte, and suggested h e go's to a hospital, he said he was fine, they told me to k keep an eye on him, he's fall in asleep now shod he stay awake for a few hours, is he safe s l sleeping?? I meant naltraxone