Recruiting
Phase 1
Phase 2

CBD & fsCBD

Sponsor:

Florida A&M University

Code:

NCT07298408

Conditions

Diabetic Peripheral Neuropathic Pain (DPN)

Diabetic Neuropathies

Eligibility Criteria

Sex: All

Age: 40 - 70

Healthy Volunteers: Not accepted

Interventions

Cannabidiol (CBD) oral solution

Full-Spectrum CBD hemp extract oral solution

Placebo in MCT oil oral solution

Study Details

Brief summary:

The "Cannabidiol for the Treatment of Diabetic Peripheral Neuropathy: Pilot study (CBD-DPN1)" is a double-blinded, placebo-controlled, crossover pilot study evaluating the efficacy of Cannabidiol (CBD) and full-spectrum CBD (fsCBD) tinctures in treating Diabetic Peripheral Neuropathy (DPN)-associated pain. DPN is a common, highly distressing complication of diabetes, characterized by chronic pain and loss of sensory function, for which currently available treatments primarily offer only symptomatic relief. CBD and fsCBD are being investigated for their potential neuroprotective and analgesic effects by regulating inflammation and oxidative stress.

The study aims to recruit 12 to 20 adult participants who have mild to moderate DPN. Subjects will receive either an active treatment (CBD isolate or fsCBD in MCT oil, dosed at 50 mg twice daily for a total of 100 mg daily) or a placebo during two sequential 6-week phases. The overall objective of this pilot phase is primarily methodological: to test and refine the clinical protocol, assess patient compliance and acceptability of the CBD formulations, and generate sufficient data to calculate the necessary sample size for a larger, definitive study. Efficacy will be measured using objective and subjective metrics, including DPN severity (DN4 Assessment Tool and DPNCheck™ for nerve conduction velocity) and pain level (PainDetect Questionnaire). Secondary outcomes include evaluating mood (HADS), sleep quality (MOS Sleep Scale), and quality of life (EQ-5D-5L).

Conditions

Diabetic Peripheral Neuropathic Pain (DPN)

Diabetic Neuropathies

Study ID

NCT07298408

Start date

Apr 2, 2026

Status verified date

Apr, 2026

Completion date

Jun 30, 2027

Anticipated

Primary completion date

Dec 31, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 40 - 70

Healthy Volunteers: Not accepted

Inclusion Criteria

1. Adult aged 40 to 70 years
2. Diagnosis of Type 2 Diabetes
3. Ambulatory and independently living adult
4. Minimum body weight of 50 kg (to ensure daily dose ≤2 mg/kg)
5. Physical exam completed within the previous 6 months
6. Liver Function Studies (ALT and AST) completed within the previous six months showing normal values
7. If NAFLD is present, ALT and AST levels are ≤2 times the Upper Limit of Normal (ULN)
8. DN4 questionnaire results indicate mild to moderate DPN
9. Nerve Conduction Test (NCT) confirms at least mild DPN
10. Signed ICF/Screening Consent
11. Able to complete required questionnaires (adequate vision)

Exclusion Criteria:

1. High-risk or severely ill individuals (e.g., high risk for general anesthesia, significant limitations due to heart/lung disease, ascites, renal failure, loss of limbs from diabetic complications)
2. Uncontrolled or severe cardiovascular disease (e.g., unstable angina, uncontrolled heart failure, recent myocardial infarction)
3. History of atrial fibrillation, dysrhythmias, MI within the previous 2 years, or stroke
4. Severe respiratory illness (e.g., uncontrolled asthma, COPD with frequent exacerbations, oxygen dependence)
5. Severe or uncontrolled liver disease (e.g., cirrhosis, active viral hepatitis A, B, or C, autoimmune hepatitis, uncontrolled primary biliary cholangitis or primary sclerosing cholangitis)
6. Elevation of liver enzymes (ALT or AST) exceeding 2 times the ULN, or bilirubin exceeding the ULN
7. Severe or uncontrolled kidney disease (e.g., end-stage renal disease requiring dialysis, uncontrolled nephrotic syndrome)
8. History of malignancy within the past 5 years (excluding certain low-risk non-melanoma skin cancers)
9. History of a seizure disorder
10. Blindness (poor vision preventing questionnaire completion)
11. Known allergy or previous adverse reaction to any ingredient, including natural strawberry flavoring
12. Reproductive Health (Women Only)
13. Currently pregnant or lactating
14. Women who can get pregnant who are not using acceptable methods of birth control
15. Current uncontrolled mental health conditions (e.g., major depressive episode with active suicidal ideation, bipolar disorder with current manic/hypomanic episode, or psychosis)
16. Diagnosis of a major depressive episode with active suicidal ideation and/or a plan to attempt suicide within the previous 5 years
17. Attempted suicide in the last 10 years
18. C-SSRS Suicide Ideation Subscore ≥5 at study onset
19. HADS-D score ≥15 at study onset
20. Used cannabis products in the past 30 days
21. Current use or history of illicit drug use or misuse of prescription medications within the previous 5 years
22. Heavy drinking (≥8 drinks/week for women; ≥15 drinks/week for men)
23. Taking medications that are known to cross-reacting with CBD or Cannabiods

Study Design

Enrollment

20 participants

Anticipated

Allocation

Randomized

Intervention Model

Crossover

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: 1. CBD Isolate Phase 1 (Placebo Phase 2)

Participants randomized to Arm 1 will be given CBD Isolate tincture 100 mg/ml (50 mg twice daily for a total of 100 mg daily) for 6 weeks in Phase 1. After a 2-week washout period they will be given an identical appearing placebo tincture for an additional 6 weeks. The bottles will be labeled: "TMH CBD for DPN Trial: (number) A" and "TMH CBD for DPN Trial: (number)B", where A refers to the vials to be used in phase one and B to the vials used for phase two. Since a vial contains a 30-day supply and each phase lasts 42 days, the participants will receive two identically labelled vials at the beginning of each phase.1

placebo comparator: 2. Placebo Phase 1 (CBD Isolate Phase 2)

Participants randomized to Arm 2 will be given a placebo tincture (0.5 ml twice daily for a total of 1 ml daily) for 6 weeks in Phase 1. After a 2-week washout period, they will be given the active tincture containing 100 mg of CBD isolate (100 mg/ ml) to use 0.5 ml twice daily for an additional 6 weeks. The bottles will be labeled: "TMH CBD for DPN Trial: (number) A" and "TMH CBD for DPN Trial: (number)B", where A refers to the vials to be used in phase one and B to the vials used for phase two. Since a vial contains a 30-day supply and each phase lasts 42 days, the participants will receive two identically labelled vials at the beginning of each phase.

experimental: 3. CBD Full-spectrum Phase 1 (Placebo Phase 2)

Participants randomized to Arm 3 will be given a Full-spectrum CBD isolate tincture with 100 mg of hemp-derived CBD isolate /ml (using 0.5 ml; 50 mg twice daily for a total of 100 mg daily) for 6 weeks in Phase 1. After a 2-week washout period they will be given an identical appearing placebo tincture for an additional 6 weeks. The bottles will be labeled: "TMH CBD for DPN Trial: (number) A" and "TMH CBD for DPN Trial: (number)B", where A refers to the vials to be used in phase one and B to the vials used for phase two. Since a vial contains a 30-day supply and each phase lasts 42 days, the participants will receive two identically labelled vials at the beginning of each phase.

placebo comparator: 4. Placebo Phase 1 (CBD Full-spectrum Phase 2)

Participants randomized to Arm 4 will be given a placebo tincture (0.5 ml twice daily for a total of 1 ml daily) for 6 weeks in Phase 1. After a 2-week washout period, they will be given the active tincture containing 100 mg of CBD Full-spectrum isolate (100 mg/ ml) to use 0.5 ml twice daily for an additional 6 weeks. The bottles will be labeled: "TMH CBD for DPN Trial: (number) A" and "TMH CBD for DPN Trial: (number)B", where A refers to the vials to be used in phase one and B to the vials used for phase two. Since a vial contains a 30-day supply and each phase lasts 42 days, the participants will receive two identically labelled vials at the beginning of each phase.

Interventions

Cannabidiol (CBD) oral solution

Strawberry-flavored Cannabidiol oral solution in medium-chain triglyceride (MCT) oil, administered orally, 100mg/ml in a 30 ml dropper bottle.

Full-Spectrum CBD hemp extract oral solution

Strawberry-flavored Full-Spectum Cannabidiol oral solution in medium-chain triglyceride (MCT) oil, administered orally, 100mg/ml in a 30 ml dropper bottle.

Placebo in MCT oil oral solution

Strawberry-flavored medium-chain triglyceride (MCT) oil, administered orally, 30 ml dropper bottle.

Primary outcome measure

  • DPN Pain Level [ Time Frame: Baseline (Day 0), Day 7, Day 21 (at home by subject), Day 35 (at home by subject), End of Phase I (Day 49), Day 63 (at home by subject), Day 77 (at home by subject), End of Phase II (Day 105). ]
  • Diabetic peripheral neuropathy diagnosis [ Time Frame: Baseline Screening (Day 0) ]
  • Diabetic Neuropathy Severity [ Time Frame: Baseline, End of Phase I (Day 49) (for NCT), End of Phase II (Day 91) (for NCT). ]

Central Contacts and Locations

Central contacts

Philip R Treadwell, PharmD

850-431-5714phillip.treadwell@tmh.org

Locations

the FSU TMH Family Practice Residency Program

Recruiting

Tallahassee, Florida, United States, 32308

Contacts

Principal Investigator:

Philip R Treadwell, PharmD

More Information

Sponsor

Florida A&M University

Last update posted

Apr 29, 2026

Last verified

Apr, 2026

Keywords

  • Placebo
  • Pain Management
  • Quality of Life
  • Cross-Over Studies
  • Double-Blinded Placebo Contolled
  • Cannabidiol

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Florida A&M University on 2026-04-29.