Simplify the following text for a Grade 8 native English-speaking person.
Original: Both nalorphine and naloxone are full antagonists and will treat an opioid overdose , but naltrexone is longer-acting than naloxone ( although neither is an irreversible antagonist like naloxazone ) , making naloxone a better emergency antidote .
Simplified: Naltrexone can help with overdose , but naloxone is more helpful in those cases .