Using open-label placebos to help reduce opioid use in chronic pain patients

Conditioned Open-label Placebos to Facilitate the Reduction of Opioid Medication (ROM) in Patients With Chronic Non-cancer Pain: a Randomized Controlled Trial

Not applicable Interventional University of Zurich · NCT06350786

This study is testing whether using open-label placebos can help people with chronic pain reduce their use of opioids like morphine.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment86 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Zurich Academic / other
Locations1 site (Zurich, Canton of Zurich)
Trial IDNCT06350786 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of open-label placebos (OLP) in reducing the daily morphine equivalent dose (MED) in patients suffering from chronic non-cancer pain (CNCP). Participants will be divided into two groups, one receiving the OLP intervention and the other receiving electronic monitoring (EM) as a control. Over six weeks, various psychological and health measures will be assessed through questionnaires, alongside evaluations of opioid withdrawal symptoms and safety outcomes. The hypothesis is that those receiving OLP will show a significant reduction in opioid consumption compared to the control group.

Who should consider this trial

Good fit: Ideal candidates are German-speaking adults aged 18 and older with chronic non-cancer pain lasting at least six months and currently on opioid medication.

Not a fit: Patients with psychotic symptoms, cognitive impairments, or serious health issues that prevent participation may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a novel method for reducing opioid dependency in patients with chronic pain.

How similar studies have performed: Previous studies have shown that open-label placebos can be effective in managing chronic pain, indicating potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Signed Informed Consent
* ≥ 18 years of age
* German speaking
* Chronic non-cancer pain ≥ 6 months in duration
* Chronic opioid medication for \> 3 months
* Oral intake of opioid medication
* Motivation for opioid reduction
* Participants have a primary treating physician who performs the reduction of the opioid medication
* Having access to a computer or tablet with an email-account

Exclusion Criteria:

* Having psychotic symptoms
* Suicidality
* Cognitive impairment to everyday life
* Planned surgery within the next two months
* Known illegal drug or harmful alcohol consumption
* Intolerance of the ingredients of the placebo pill (e.g., lactose, sucrose, corn-starch)
* Serious health problems that make study participation impossible
* Simultaneous participation in other studies with investigational drugs or CNCP specific interventions

Where this trial is running

Zurich, Canton of Zurich

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 Chronic Non-cancer 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.