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Narcan Side Effects Center: Detailed Datasheet

Medically reviewed by Min Clinic Staff | Updated: January 2026

Narcan (Naloxone Hydrochloride Injection) side effects drug center

PROFESSIONAL

CONSUMER

SIDE EFFECTS

 

Narcan Side Effects Center

What Is Narcan?

Narcan (naloxone) is an opioid antagonist used for the complete or partial reversal of opioid overdose, including respiratory depression. Narcan is also used for diagnosis of suspected or known acute opioid overdose and also for blood pressure support in septic shock. Narcan is available in generic form.

What Are Side Effects of Narcan?

Common side effects of Narcan and narcotic drug withdrawal are:

  • flushing,
  • dizziness,
  • tiredness,