Suzetrigine for Opioid-Free Recovery After C-Section
(SPARE Trial)
What You Need to Know Before You Apply
What is the purpose of this trial?
This trial explores whether suzetrigine, a new potential drug, can help women remain opioid-free for 72 hours after a C-section. Participants will receive either suzetrigine or a placebo, alongside standard pain treatments like acetaminophen and anti-inflammatory drugs. The study aims to determine if suzetrigine can reduce the need for opioids post-surgery. Women undergoing a C-section with planned spinal or epidural anesthesia, who agree not to provide breast milk during the study period, might be suitable candidates. This trial offers an opportunity to explore a new method of managing pain after delivery without relying on opioids. As a Phase 4 trial, suzetrigine has already received FDA approval and proven effective, and this research seeks to understand its benefits for more patients.
Do I need to stop my current medications to join the trial?
The trial does not specify if you need to stop taking your current medications, but you cannot participate if you are using medications that significantly alter suzetrigine metabolism, like ketoconazole or St. John's wort.
What is the safety track record for suzetrigine?
Research has shown that suzetrigine is generally safe and well-tolerated. One study combined safety data from over 2,000 people, revealing that the most common side effects were mild, such as itching (experienced by 2.1% of participants) and muscle pain. No serious side effects were reported.
Suzetrigine is a non-opioid pain medicine that blocks certain pain signals. The FDA has already approved it for other types of short-term pain, indicating it has passed strict safety checks for those uses.
Overall, evidence suggests that suzetrigine offers a safe option for managing pain without using opioids.12345Why are researchers enthusiastic about this study treatment?
Researchers are excited about suzetrigine because it offers a potential path to opioid-free recovery after a C-section. Unlike standard treatments that often rely on opioids for managing postoperative pain, suzetrigine is an oral medication designed to be part of a multimodal pain management approach, reducing the need for opioids and their associated risks. This new option, combined with acetaminophen and nonsteroidal anti-inflammatory drugs, aims to effectively manage pain while minimizing opioid exposure, which is a significant advancement in post-surgical care.
What evidence suggests that suzetrigine might be an effective treatment for opioid-free recovery after C-section?
Research has shown that suzetrigine effectively manages pain after surgery. In earlier studies, 90.9% of patients undergoing reconstructive and cosmetic surgery recovered without needing opioids. This trial will evaluate suzetrigine as a potential option for women to avoid opioids for pain relief after a C-section. Participants will receive either suzetrigine or a placebo, alongside standardized multimodal postoperative analgesia. As a non-opioid pain reliever, suzetrigine can ease pain without the side effects often linked to opioids. It has a good safety record, with fewer side effects like nausea and dizziness compared to typical pain medications. Overall, suzetrigine appears to be a promising option for managing pain.678910
Who Is on the Research Team?
Lorie M. Harper, MD, MSCI
Principal Investigator
Dell Medical School, University of Texas at Austin, Department of Women's Health
Are You a Good Fit for This Trial?
This trial is for women aged 18 or older having a planned or unplanned C-section with a Pfannenstiel (bikini) incision under spinal, epidural, or combined anesthesia. Participants must not have severe liver/kidney disease, chronic opioid use, certain medication interactions, allergies to suzetrigine, or be planning to breastfeed during the study.Inclusion Criteria
Exclusion Criteria
Timeline for a Trial Participant
Screening
Participants are screened for eligibility to participate in the trial
Treatment
Participants receive either suzetrigine or placebo following cesarean delivery, with scheduled maintenance dosing every 12 hours
Follow-up
Participants are monitored for safety, pain intensity, and recovery through structured follow-up assessments
Post-Discharge Monitoring
Participants report opioid use and recovery outcomes after hospital discharge
What Are the Treatments Tested in This Trial?
Interventions
- Suzetrigine
Trial Overview
The study tests whether adding suzetrigine to standard pain management after C-section helps more women avoid using opioids in the first 72 hours post-surgery. Participants are randomly given either suzetrigine or a placebo along with usual pain medications.
How Is the Trial Designed?
2
Treatment groups
Experimental Treatment
Participants will receive oral suzetrigine following cesarean delivery in addition to standardized multimodal postoperative analgesia, including scheduled acetaminophen and nonsteroidal anti-inflammatory drugs, with opioid medications available as needed for breakthrough pain.
Participants will receive matching oral placebo following cesarean delivery in addition to standardized multimodal postoperative analgesia, including scheduled acetaminophen and nonsteroidal anti-inflammatory drugs, with opioid medications available as needed for breakthrough pain.
Find a Clinic Near You
Who Is Running the Clinical Trial?
University of Texas at Austin
Lead Sponsor
Citations
The effectiveness and value of suzetrigine for moderate ... - PMC
We evaluated the efficacy and safety of suzetrigine in adults with moderate to severe acute pain against 4 treatment modalities: no systemic therapy, as ...
2.
anesthesiologynews.com
anesthesiologynews.com/Pain-Medicine/Article/05-26/Pain-Suzetrigine-Data-Reveal-Reduced-Postoperative-Opioids/80490Pain Suzetrigine Data Reveal Reduced Postoperative ...
Suzetrigine reduces postoperative pain and enables opioid-free recovery in 90.9% of reconstructive and aesthetic ...
3.
icer.org
icer.org/wp-content/uploads/2025/02/ICER_Acute-Pain_Evidence-Report_For-Publication_020525.pdfSuzetrigine for Acute Pain:Effectiveness and Value
We aimed to assess the clinical effectiveness and safety of suzetrigine as an add-on to non-systemic treatments for patients with moderate to ...
4.
physiciansweekly.com
physiciansweekly.com/post/suzetrigine-highly-effective-for-pain-in-aesthetic-reconstructive-surgery?pwm=AprSuzetrigine Highly Effective for Pain in Aesthetic & ...
Phase 4 results demonstrate significant pain relief efficacy while enabling opioid-free recovery for 90.9% of participants.
Clinical Efficacy and Safety Profile of Suzetrigine: A Novel Non ...
The drug displayed a favorable safety profile with a lower incidence of common opioid-related adverse effects, such as nausea and dizziness, and ...
6.
trial.medpath.com
trial.medpath.com/clinical-trial/0446e7b0e6b5aa2c/nct07534709-suzetrigine-placebo-opioid-free-recovery-cesarean-deliverySuzetrigine for Opioid-Free Recovery After Cesarean Delivery
... safety data for suzetrigine.*. Known allergy, hypersensitivity, or contraindication to suzetrigine or any component of its formulation.
219209Orig1s000 - accessdata.fda.gov
the Safety and Effectiveness of Suzetrigine for Acute Pain (Study 107) provided uncontrolled safety data over a treatment period of up to 14 days. Study 107 ...
Suzetrigine – A Novel FDA‐Approved Analgesic - PMC - NIH
Suzetrigine is the first class of non‐opioid analgesics that selectively targets and blocks a key mediator in pain signal transmission, ...
9.
news.vrtx.com
news.vrtx.com/news-releases/news-release-details/vertex-present-new-data-journavxr-demonstrates-effective-painVertex to Present New Data on JOURNAVX® That ...
JOURNAVX was generally safe and well tolerated with no serious adverse events related to JOURNAVX. Adverse events were mild or moderate in ...
10.
icer.org
icer.org/wp-content/uploads/2024/12/ICER_Acute-Pain_Draft-Report_For-Publication_120924.pdfSuzetrigine for Acute Pain:Effectiveness and Value
Minor side effects of opioids are common, and the risk of OUD after short-term use is uncertain. While awaiting additional data on the safety.
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