Drug details

Revex (nalmefene hydrochloride)

type of Opioid Reversal Agents

Revex (nalmefene hydrochloride injection) is an opioid antagonist used to treat a narcotic overdose or other situation in which opioid side effects may be harmful. The brand name Revex is discontinued, but generic versions may be available.

This drug may have the following side effects:
  • hives,
  • difficulty breathing,
  • swelling of your face, lips, tongue, or throat,
  • fever,
  • chills,
  • dizziness,
  • headache, and
  • fast heart rate,
  • low or high blood pressure,
  • flushing, or feeling of warmth
The following drugs are related to Revex, either as a replacement or used together:
  • Narcan (naloxone hydrochloride injection)
  • Narcan Nasal (naloxone hydrochloride nasal spray)