Evaluating the effects of oxytocin on pain relief and opioid use

Opioid-Sparing and Pain-Reducing Properties of Syntocinon: A Dose-Effect Determination

Early Phase 1 Interventional University of Florida · NCT04218409

This study is testing if oxytocin can make oxycodone work better for pain relief and help reduce the chances of misuse for people who need pain management.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Enrollment45 (estimated)
Ages21 Years to 45 Years
SexAll
SponsorUniversity of Florida Academic / other
Locations1 site (Gainesville, Florida)
Trial IDNCT04218409 on ClinicalTrials.gov

What this trial studies

This study investigates the potential of oxytocin to enhance the pain-reducing effects of oxycodone while potentially lowering its abuse liability. Participants will engage in a series of laboratory sessions where they will self-administer intranasal oxytocin or a placebo shortly after taking oral oxycodone or a placebo. The study employs a double-blind, randomized, placebo-controlled design to assess the effects on experimentally-induced pain, subjective experiences, and neural activation. The research aims to uncover the neurobehavioral mechanisms that contribute to individual differences in response to these substances.

Who should consider this trial

Good fit: Ideal candidates are healthy individuals who have reported recreational use of opioids and are not currently experiencing chronic pain.

Not a fit: Patients with significant physical diseases, major psychiatric disorders, or current chronic pain conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to safer pain management strategies that reduce reliance on opioids.

How similar studies have performed: While the combination of oxytocin and opioids is a novel approach, previous studies have suggested potential benefits of oxytocin in pain management, indicating a promising area of exploration.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Individuals fluent in English will participate.
* Must report recreational use of opioids.
* Be within 20% of their ideal body weight.
* Are not currently experiencing chronic pain (pain on most days during the past 3 months)
* Have a systolic blood pressure of \<=140 and diastolic blood pressure of \<= 90, and a heart rate \<= 90 beats per minute.
* Participants must also have a normal electrocardiogram (EKG) reading and bloodwork indicating no major health contraindications.

Exclusion criteria:

* Significant current physical disease or major psychiatric disorder.
* No self-reported current interest in drug abuse treatment.
* Women who are pregnant or nursing.
* Any comorbid illicit substance use disorders or current clinically significant withdrawal for any abused drug excluding nicotine and caffeine.
* Any conditions that preclude safety in the MRI scanner, such as: implanted electrical devices (e.g., cardiac pacemaker, neurostimulator); implanted metallic clips or pins (e.g., aneurysm clip); a history of working with metal (unless able to demonstrate participant is MRI safe), and claustrophobia.

Where this trial is running

Gainesville, Florida

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Pain
Last reviewed 2026-06-13 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.