Transition to Extended-release Buprenorphine Injectable Within Seven Days for Opioid Use Disorder Treatment: A Scoping Narrative
Bibliographic record
Abstract
BACKGROUND: For patients with opioid use disorder, Sublocade (extended-release buprenorphine; Bup-XR-S) and Buvidal/Brixadi (long-acting buprenorphine; Bup-LA-B) formulations allow for less frequent dosing. Traditional induction with Bup-XR-S requires 7 or more days on transmucosal buprenorphine can delay care and increase disengagement risk. Quicker transition to Bup-XR-S or Bup-LA-B presents a promising strategy. With the prevalence of potent illicit opioids, stabilization within 7 days is critical to prevent overdose and withdrawal. This narrative review assesses outcomes of transitions to long-acting injectable buprenorphine within 7 days of the last sublingual dose. METHODS: A systematic search of MEDLINE and EMBASE was completed through February 14, 2025. Studies involving patients with opioid use disorder who underwent Bup-XR-S and Bup-LA-B transition were included. Data on patient characteristics, buprenorphine dosing, retention rates, and outcomes were extracted and synthesized. RESULTS: We identified 21 studies, totaling 534 patients, that met our inclusion criteria. For Bup-XR-S studies, 75 patients transitioned to Bup-XR-S within 24 hours. Of patients, 4% experienced withdrawal symptoms requiring additional opioid support. All Bup-LA-B studies reported transitions within 24 hours. Short-term retention (4 wk) exceeded 60%. Adverse events were infrequent and primarily mild, including injection site pain, nausea, and constipation. CONCLUSIONS: Limited descriptive studies suggest transitioning to Bup-XR-S within 7 days appears feasible, well-tolerated, and supports treatment adherence. Following labelled dosing, Bup-LA-B transitions within 24 hours were effective and well-tolerated. While these approaches may help initiate opioid agonist therapy in high-risk populations and mitigate overdose risks, further research is needed to confirm effectiveness and impact on retention.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.008 | 0.034 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.005 | 0.006 |
| Bibliometrics | 0.014 | 0.017 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.003 | 0.003 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".