Outpatient Low-Dose Initiation of Buprenorphine for People Using Fentanyl

Original research
by
Suen, Leslie W. et al

Release Date

2025

Geography

USA

Language of Resource

English

Full Text Available

Yes

Open Access / OK to Reproduce

Yes

Peer Reviewed

Yes

Objective

The rise of high-potency opioids such as fentanyl makes buprenorphine initiation challenging due to the risks of precipitated withdrawal, prompting the exploration of strategies, such as low-dose initiation (LDI) of buprenorphine.

Findings/Key points

This study included 126 adults across 175 low-dose initiation (LDI) attempts. Of this, only 60 attempts (34%) were successful in LDI of buprenorphine. No significant differences were found between protocol type (4-day vs 7-day), and buprenorphine retention rates were low.

Design/methods

This cohort study analyzed data on adults with opioid use disorder (OUD) who self-reported daily fentanyl use and underwent buprenorphine initiation using LDI. Data were extracted from the electronic health records of two treatment clinics in San Francisco, California, from May 2021 to November 2022.

Keywords

Housing
Illegal drugs
Overdose
Outcomes
Substitution/OAT
Treatment/recovery