INTERVENTIONALCOMPLETEDNCT04495725

Do Discounted Vouchers for Medical Cannabis Reduce Opioid Use in Adults With Pain: A Randomized Controlled Trial (The ReLeaf-V Study)

This study will examine how discounted vouchers for medical cannabis use affects opioid analgesic use in adults with chronic pain. Our study findings will have critically important implications to shape clinical care and medical cannabis policies.

Locally preserved from ClinicalTrials.govOpen ClinicalTrials.govlast source update 2026-03-10

What this record can show

Protocol only - no registry results posted

This locally preserved record separates the registered protocol from source-reported registry results. Neither is a treatment recommendation.

Registry facts

Study at a glance

Phase: NA
Enrollment: 270 (ACTUAL)
Start date: 2020-10-06
Sponsor: Vireo Health
Design: RANDOMIZED · PARALLEL · TREATMENT
Locations: 1
Results record: Not present in registry snapshot

This study will examine how discounted vouchers for medical cannabis use affects opioid analgesic use in adults with chronic pain. ReLeaf-V is a 4-arm blinded randomized controlled trial (RCT) of 352 adults with (a) severe or chronic neuropathic or joint pain, (b) opioid analgesic use, and (c) active certification for medical cannabis. We will randomize participants to a discounted voucher for: 1) a placebo soft-gel capsule product, 2) high THC:low CBD soft-gel capsule product (4.3mg THC/0.7mg CBD), 3) equal THC:CBD soft-gel capsule product (2.5mg THC/2.5mg CBD), or 4) low THC:high CBD soft-gel capsule product (0.2mg THC/4.8mg CBD). Over 14 weeks, participants will have 5 research visits in which data will be collected from questionnaires, and medical and Prescription Monitoring Program (PMP) records. The primary independent variable will be randomization arm, and the primary outcome will be cumulative opioid analgesic dose.

Linked local records

Related local records

Local links use governed condition terms or exact source-reported intervention names. They are navigation candidates, not efficacy claims.

Conditions

Chronic Pain

Cannabinoids and active compounds

No governed compound link was found.

Medicines

No exact medicine-name link was found.

Interventions

What was registered

OTHER

Discounted Vouchers for Medical Cannabis Soft-Gel Capsule Products

We will randomize participants to one of the following four conditions for discounted vouchers: 1) a discounted voucher for a placebo soft-gel capsule product, 2) a discounted voucher for a high THC:low CBD soft-gel capsule product, 3) a discounted voucher for an equal THC:CBD soft-gel capsule product, or 4) a discounted voucher for a low THC:high CBD soft-gel capsule product. We will stratify randomization by history of cannabis use (no use in the past year, used in the past year and not near-daily or daily (used in the past year and \<20 days out of the last 30 days), near-daily or daily (\>= 20 days out of the last 30 days) baseline opioid analgesic prescription (chronic opioid treatment vs. not chronic opioid use), and primary pain condition (neuropathy, not neuropathy). Chronic opioid treatment is defined as prescribed opioids ≥90 non-overlapping days in the past 182 days. Randomization will occur in blocks to ensure equal randomization over time.

Eligibility

Population and criteria

Sex: ALL
Minimum age: 18 Years
Maximum age: 99 Years
Healthy volunteers: Not accepted

Inclusion criteria

1. \>18 years old 2. English or Spanish fluency 3. active certification for medical cannabis 4. intends to have a soft-gel capsule product dispensed at Vireo Health 5. medical cannabis qualifying conditions or complications of (a) chronic pain, or (b) pain that degrades health and functional capability as an alternative to opioid use or substance use disorder or (c) severe or chronic pain 6. joint or neuropathic pain 7. current severe pain 8. dispensed opioids analgesics within the last 60 days To maintain the integrity of the study, we do not disclose all

Inclusion criteria

to potential participants.

Exclusion criteria

1. inability to provide informed consent 2. inability to complete study visits over 14 weeks 3. terminal illness 4. current or prior psychotic disorder 5. current or prior buprenorphine or methadone treatment for opioid use disorder 6. NYS medical marijuana prescriber does not approve changes to product and dosing recommendations listed on the participant's certification form 7. Allergy to tapioca or coconut 8. currently pregnant, planning to become pregnant within the next 3 months, or breastfeeding 9. a condition that is considered by a pharmacist or medical provider to be a clinical contraindication to medical cannabis use (e.g. unstable cardiac arrhythmia or specific drug-drug interaction)

primary outcomes

primary measures

Opioid analgesic use

Time frame: Opioid analgesic use will be weekly cumulative dose of opioid analgesics over 14 weeks.

The primary outcome will be cumulative opioid analgesic dose.

Publications

Locally readable linked articles

No exact PMID-linked public article is currently readable locally.

Snapshot provenance

Snapshot: 92b6f9e7-def5-47fe-9150-f9b342e35efa
Retrieved: 11/09/2026, 14:16:00
SHA-256: ba0bf8219bb1b82f573f5b97963c26eec07419db6245021eb5e0ce6b00b7de76