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Can a single dose of cannabis oil ease acute back pain?

NCT ID NCT04816994

Symptom relief Sponsor: Hadassah Medical Organization 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a single dose of cannabis oil can reduce acute radicular (nerve-related) back pain and the need for opioid painkillers. Two hundred adults with sudden back pain will receive either cannabis oil or a placebo (olive oil) and be monitored for 24 hours. The goal is to see if cannabis oil provides safe and effective pain relief.

What this could mean

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

Active substance
cannabis oil (containing THC and CBD)
What this could lead to
If it works, this could offer a new, fast-acting option for managing sudden nerve-related back pain and reducing reliance on opioids.
What could go wrong
This is a single-dose, 24-hour study, so long-term effects and benefits are unknown. The results may not apply to chronic pain or regular cannabis users.

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 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 200 people

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

Started

Jan 2018

Expected to finish

Dec 2025

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 70 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Age 18 - 70 years * ASA 1 or 2 * Acute Radicular Pain \< 12 weeks * Pain of VAS 6 or more/ VRS moderate or more * Radicular pain: Dermatomal pain that corresponds to physical exam and CT/MRI in the last year Exclusion Criteria: * Age \< 18 or \> 70 years * ASA 3 or more * Chronic radicular pain \> 12 weeks * Past spine surgery * Intermittent Claudication due to Vascular Disease * Diagnosed Diabetic Neuropathy * Regular Cannabis use in past 6 months (more than once a week) OR once in last 2 weeks * Regular opioid use in past week (Targin, Percocet, Tramadol) (Equivalent to Oxycodone 20 mg/day or more) * Pregnancy or Lactating * Ischemic heart disease * Renal or hepatic failure * History of psychiatric illness * Cognitive impairment or inability to answer questions * Known allergy to opioids * Potential Loss to follow up

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Conditions

The condition(s) this trial relates to.

cannabis dependence

As listed by the trial registrant

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

Acute radicular back pain Cannabis

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

  • Hadassah Medical Center

    RECRUITING

    Jerusalem, Israel

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