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Could the 'Love Hormone' ease surgery pain and cut opioid use?

NCT ID NCT06483659

Symptom relief Sponsor: Brigham and Women's Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Aug 14, 2026 · Updated 2 times

Summary

This study tests whether giving oxytocin (the 'love hormone') through an IV during surgery can reduce pain and the need for opioid painkillers after a minimally invasive hysterectomy. Researchers will compare oxytocin to a placebo in 152 adults aged 18-65. The goal is to find a safer way to manage post-operative pain.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Oxytocin (Pitocin)
What this could lead to
If it works, this could offer a new way to manage post-surgery pain and reduce reliance on opioids.
What could go wrong
This is an early phase 2 trial with only 152 participants, so results may not apply broadly. Oxytocin may not outperform placebo for pain relief.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 152 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2025

Expected to finish

Jun 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Ages 18-65 years old * ASA category 1-3 * Scheduled to undergo minimally invasive hysterectomy * No documented allergy to oxytocin Exclusion Criteria: * American Society of Anesthesiologists (ASA) group 4 or greater * Age \>65 years old * Additional surgical procedures including but not limited to minor laparotomy, omentectomy, cystectomy, vaginectomy, and/or ablation of endometriosis. * Active opioid prescription of the equivalent of oxycodone \>10 mg /day * Opioid use disorder, including patients in treatment receiving naltrexone or Suboxone (Buprenorphine-naloxone) * Allergies to any study medication: acetaminophen, celecoxib, ketorolac, fentanyl, hydromorphone, or oxycodone. * Epidural/Regional anesthesia for intra-operative or post-operative pain. * Inability to understand the questionnaires * Intra-operative and post-operative exclusion: Procedure converted to open or extension of primary surgery, Intra-operative EBL \>500 ml., Placement of epidural catheter or regional anesthesia at PACU for pain management, Hospitalization of the patient due to surgical or anesthetic complications

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Conditions

The condition(s) this trial relates to.

Pain, Postoperative

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Postoperative pain

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Brigham and Women's Hospital

    RECRUITING

    Boston, Massachusetts, 02215, United States

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