Evaluating Mirtazapine's effect on anxiety in Parkinson's patients

Evaluating the Effect of Mirtazapine on Anxiety in Parkinson's Disease Patients; a Randomized Double-blinded Placebo-controlled Clinical Trial

Phase 2 Interventional Shahid Beheshti University of Medical Sciences · NCT06530290

This study is testing whether the medication mirtazapine can help reduce anxiety in people with Parkinson's disease.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment64 (estimated)
Ages18 Years and up
SexAll
SponsorShahid Beheshti University of Medical Sciences Academic / other
Locations1 site (Tehran)
Trial IDNCT06530290 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the impact of mirtazapine on anxiety levels in patients diagnosed with Parkinson's disease. Conducted at the Movement Disorders Clinic of Shohadaye Tajrish Hospital, the study employs a double-blind, placebo-controlled design where participants are randomly assigned to receive either mirtazapine or a placebo for 12 weeks. The primary outcome focuses on anxiety, while secondary outcomes include depression, fatigue, sleep disorders, and quality of life, assessed at baseline, 4 weeks, and 12 weeks. The study aims to provide insights into the efficacy of mirtazapine for managing anxiety in this patient population.

Who should consider this trial

Good fit: Ideal candidates include men and women over 17 years old with mild to moderate Parkinson's disease and a self-reported or clinically diagnosed anxiety.

Not a fit: Patients with major depressive disorder, other neurodegenerative diseases, or those on certain medications may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for managing anxiety in patients with Parkinson's disease.

How similar studies have performed: While there is limited data on mirtazapine specifically for anxiety in Parkinson's patients, similar studies have explored antidepressants for anxiety management in neurological conditions, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Men and women over 17 years old
* Patient with Parkinson's disease according to UKPDSBB criteria
* Patient with mild/moderate Parkinson's disease according to Hoehn and Yahr Scale (HY score = 1-3)
* Self-report or clinical diagnosis of anxiety
* Patients who have signed informed consent to participate in the study.

Exclusion Criteria:

* Pregnant and lactating women
* Parkinson's patients with onset of disease in less than 1 year
* Unstable medication for Parkinson's disease during the last two weeks
* Parkinson's patients with DBS
* Patients with other neurodegenerative diseases like multiple system atrophy (MSA), Huntington's and etc.
* Patients with major depressive disorder
* A history of using SSRIs, SNRIs, benzodiazepines and β-blockers during the last 4 weeks
* A history of using MAO inhibitors
* A history of alcohol and substance abuse
* A history of acute stress during the last 3 months
* A history of suicide
* A history of cardiovascular diseases
* A history of liver and or kidney disorders

Where this trial is running

Tehran

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 Parkinson DiseaseAnxietyParkinson's diseaseMirtazapine
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.