EMRA*Cast A Safer Opioid? Buprenorphine for Acute Pain in the ED
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Jan 1, 2026 
Dr. John Lee and Dr. Terry Ahern, both emergency medicine specialists at Stanford, dive into the innovative use of low-dose buprenorphine for acute pain management in the ER. They discuss its unique pharmacology, making it a safer alternative to traditional opioids with a lower risk of overdose. The duo highlights the advantages of its IV formulation, dosing challenges, and patient selection strategies. They also share insights from their real-world data on buprenorphine's efficacy and the importance of multidisciplinary collaboration in implementing this promising option.
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Longer, Sustained Analgesic Effect
- Buprenorphine has a longer half-life than typical IV opioids, often 6–10 hours.
- IV onset is minutes and sublingual onset 30–60 minutes, giving more sustained analgesia.
Safer Respiratory Profile Than Full Agonists
- Buprenorphine has an enhanced safety profile including a respiratory depression ceiling.
- It causes less constipation, pruritis, euphoria, and lower addiction potential than full agonists.
Use Low Doses For Acute ED Pain
- Consider buprenorphine for any ED patient who would otherwise need an IV opioid.
- Use much lower microgram doses for opioid-naive acute pain than OUD regimens.