Clinical trial Recruiting at 8 sites Phase 4 Interventional Ages 18 and up

Comparing pain relief methods after surgery

Official title: Comparing Analgesic Regimen Effectiveness and Safety for Surgery (CARES) Trial

Run by University of Michigan · NCT05722002 · Data updated 2026-11-12

This study is testing whether a combination of over-the-counter pain relievers works better and has fewer side effects than low-dose opioids for people recovering from common surgeries.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment900 (estimated)
SponsorUniversity of Michigan
Academic / other
Locations8 sites (Ann Arbor, Michigan and 7 other locations)
StatusRecruiting
StartedFebruary 6, 2023
Main results expectedFebruary 10, 2027
Study endsAugust 31, 2027
Registry record updatedAugust 28, 2026
Trial IDNCT05722002 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults undergoing laparoscopic gallbladder removal, inguinal hernia repair, or breast lumpectomy with no significant analgesic medication use prior to surgery.

Probably not a fit

Patients with contraindications to NSAIDs or opioids, or those anticipating other surgeries within six months, may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This trial compares the effectiveness and safety of two pain management regimens for patients undergoing common low-risk surgical procedures, including laparoscopic gallbladder removal, hernia repair, and breast lump removal. Participants will be randomly assigned to receive either a combination of Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) and acetaminophen or a low dose of opioids plus acetaminophen. The study aims to determine if the NSAID regimen leads to better clinical outcomes and fewer side effects compared to the opioid regimen.

Why it matters

Potential benefit: If successful, this study could provide a safer and more effective pain management option for patients after surgery.

How similar studies have gone: Other studies have shown promising results in comparing NSAIDs and opioids for postoperative pain management, indicating this approach has been tested with some success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* No significant analgesic medication use before surgery: For this study, significant analgesic medication use before surgery as use of prescriptions for opioid or NSAID medications in the past 30 days, or over-the-counter NSAID use on greater than 7 of 30 past days, as reported by the patient.
* One of three common low-risk surgical procedures: For this study, the three-common low-risk surgical procedures will include laparoscopic gallbladder removal, inguinal hernia repair, and breast lumpectomy.

Exclusion Criteria:

* Anticipated other surgery within 6 months or anticipated life expectancy of less than 6 months
* Patients with contraindications to NSAID drugs in the NSAID arm, opioid drugs in the OPIOID arm, or acetaminophen will be excluded. There are specific contraindications that will be reviewed per protocol.

Where it's running

  • University of Michigan
    Ann Arbor, Michigan, United States
    Recruiting
  • Henry Ford Health System
    Detroit, Michigan, United States
    Recruiting
  • Washington University in Saint Louis
    St Louis, Missouri, United States
    Recruiting
  • Cooper University Health Care
    Camden, New Jersey, United States
    Recruiting
  • University of North Carolina Hospitals
    Chapel Hill, North Carolina, United States
    Recruiting
  • Temple University - Temple Health
    Philadelphia, Pennsylvania, United States
    Recruiting
Show 2 more locations
  • Women's College Hospital
    Toronto, Ontario, Canada
    Recruiting
  • Unity Health Toronto
    Toronto, Ontario, Canada
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.