Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 55 to 85

Resveratrol (Jotrol) in Parkinson’s: a 3-month comparison of two doses vs placebo

Official title: Multicenter, Randomized, Double Blind, Placebo-Controlled Phase 2a Study, to Evaluate Safety, Tolerability and Pharmacokinetics of Resveratrol (JOTROLTM) in Parkinson's Disease

Run by Georgetown University · NCT07592767 · Data updated 2026-11-12

This study tests whether two daily doses of resveratrol (Jotrol) can be safely given and may show biological effects in people with Parkinson’s disease.

More Parkinson's Disease trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages55 Years to 85 Years
SexAll
Enrollment30 (estimated)
SponsorGeorgetown University
Academic / other
Locations1 site (Washington D.C., District of Columbia)
StatusRecruiting
StartedSeptember 17, 2026
Main results expectedJune 1, 2028
Study endsJune 1, 2029
Registry record updatedSeptember 18, 2026
Trial IDNCT07592767 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 55–85 with stable levodopa/DA therapy, a clinical PD diagnosis, MoCA ≥18, and Hoehn and Yahr stages 2–3.

Probably not a fit

Individuals not showing any tolerability signal or with advanced disease or comorbidities may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a phase 2a, randomized, double-arm dose-escalation study in Parkinson’s disease. Thirty participants will be assigned to 200 mg Jotrol, 400 mg Jotrol, or matching placebo once daily for 3 months, with safety, tolerability, PK/PD, and biomarkers explored. An optional sub-study may collect cerebrospinal fluid biomarkers to further understand drug effects. Enrollment spans about one year across roughly three US centers, with total study participation of 4–5 months per participant.

Why it matters

Potential benefit: If successful, participants could experience a favorable safety or biomarker signal that supports further development of resveratrol for PD.

How similar studies have gone: Prior trials of similar polyphenol compounds have shown mixed safety signals; this study explores a novel, titrating dosing approach in PD.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Capable of providing informed consent (IC) and complying with study procedures
* Stable on Levodopa and/or DA agonists for at least 4 weeks before enrollment
* Clinical diagnosis of PD according to UK Brain Bank criteria and/or PD with Dementia (PDD) by MDS criteria (53-55).
* MoCA≥18.
* Hohn and Yahr stage 2 and 3
* Age of 55-85 years, medically stable
* English Fluency

Exclusion Criteria:

* Known PD-linked gene mutations e.g. PINK-1, DJ-1, parkin, LRRK2 etc.
* Clinical signs indicating syndromes or disorders other than PD including, Alzheimer's Disease (AD), corticobasal degeneration (CBD), supranuclear gaze palsy, multiple system atrophy (MSA), chronic traumatic encephalopathy (CTE), frontal dementia, history of stroke, head injury or encephalitis, cerebellar signs, early severe autonomic involvement
* Any psychiatric diagnosis or symptoms, (e.g., hallucinations and suicidality, major depression, or delusions) that could interfere with study procedures
* Medical history of liver or pancreatic disease, GI, ulcers and Chron's disease, kidney, or blood problems. Any other clinically significant abnormalities in physical examination, vital signs, laboratory tests, or ECG at Screening or Baseline. Any other medical conditions (e.g., cardiac, respiratory, GI, renal disease) which are not adequately controlled, or which in the opinion of the investigator(s) could affect the subject's safety or interfere with the study assessments and are below grade 3 criteria as outlined in table 2.
* Enrolled as an active participant in another clinical study
* Anti-coagulant medications, including Coumadin, heparin, enoxaparin, fondaparinux etc.
* Any immunological disease which is not adequately controlled, or which requires treatment with immunoglobulins, systemic monoclonal antibodies (or derivatives of monoclonal antibodies), systemic immunosuppressant's, or plasmapheresis during the
* Geriatric Depression Scale (GDS) score greater than or equal to 8 at Screening.
* Answer "yes" to C-SSRS suicidal ideation Type 4 or 5, or any suicidal behavior assessment within 6 months before Screening, at Screening, or at the Baseline Visit, or has been hospitalized or treated for suicidal behavior in the past 5 years before Screening.
* Planned surgery which requires general anesthesia that would take place during the study.
* Severe visual or hearing impairment that would prevent the subject from performing psychometric tests accurately.
* Women of Childbearing Potential (WCBP) or lactating.
* Must not be on any nutritional or medicinal supplements at least 6 weeks prior to enrollment.

Where it's running

  • Georgetown University Hospital
    Washington D.C., District of Columbia, United States
    Recruiting

Study contacts

  • Principal investigator: Fernando Pagan, M.D. — Georgetown University
  • Study coordinator: Luke Lovelace, BS, MBA
  • Email: ll928@georgetown.edu
  • Phone: 757-802-5001

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.