From the NIH: “In a clinical trial supported by the National Institutes of Health (NIH), a research team found that administering weekly injectable extended-release buprenorphine for treatment of opioid use disorder (OUD) during pregnancy led to higher rates of abstinence from illicit opioids than buprenorphine given daily under the tongue (sublingual), one of the standard methods of treatment. Additionally, serious adverse events were less common in those receiving extended-release treatment. The findings, which support the use of this formulation of buprenorphine for treating OUD during pregnancy, were published in JAMA Internal Medicine.
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In the multicenter trial, 140 pregnant adults were randomized to receive either injectable extended-release or sublingual buprenorphine (with or without naloxone). The trial, supported by the NIDA Clinical Trials Network as part of the NIH Helping to End Addiction Long-term® Initiative (NIH HEAL Initiative®), was the first randomized trial testing extended-release buprenorphine for OUD in pregnancy and postpartum.”
Read more here and read the full study here.