Benzhexol vs. Procyclidine for tremor in tremor-predominant Parkinson's
Official title: Comparison of Effectiveness of Benzhexol and Procyclidine in Improving Tremor in Tremor Predominant Parkinson's Disease Patients
Run by King Edward Medical University · NCT07810296 · Data updated 2026-11-12
This study tests whether benzhexol works as well as procyclidine to reduce tremor in adults with tremor-predominant Parkinson's disease who are taking levodopa.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 40 Years to 70 Years |
| Sex | All |
| Enrollment | 88 (estimated) |
| Sponsor | King Edward Medical University Academic / other |
| Locations | 1 site (Lahore, Punjab Province) |
| Status | Recruiting |
| Started | September 2026 |
| Main results expected | July 2027 |
| Study ends | July 2027 |
| Registry record updated | September 14, 2026 |
| Trial ID | NCT07810296 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 40-70 with Parkinson's disease and resting tremor on levodopa/carbidopa, at Hoehn and Yahr stage 1–3, with primary tremor symptoms.
✕Probably not a fit
Patients with cognitive issues, significant urinary or cardiac comorbidities, or angle-closure glaucoma may not benefit and are excluded.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
In this randomized, two-arm trial, adults with tremor-predominant Parkinson's disease on levodopa will receive either benzhexol or procyclidine in addition to their usual treatment. Tremor and other motor symptoms will be measured at baseline, 2 weeks, 3 months, and 6 months using the MDS-UPDRS-III tremor subset. Dosing starts with fixed ramp-ups and may be adjusted for tremor control and tolerability. The primary aim is to see if benzhexol provides tremor relief similar to procyclidine and to compare side effects between the two drugs.
Why it matters
Potential benefit: If successful, patients could have a better tremor-control option with comparable efficacy and different side-effect profiles.
How similar studies have gone: Previous investigations in anticholinergic therapies for tremor have shown variable results; this study tests a direct comparison to determine relative efficacy and safety.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Diagnosed Parkinson's disease according to the Movement Disorder Society Clinical Diagnostic Criteria for Parkinson's Disease, with predominant tremor at presentation. * Hoehn and Yahr stage 1, 2, or 3. * Any gender. * Age 40 to 70 years. * Receiving levodopa/carbidopa monotherapy for Parkinson's disease, with resting tremor present. Exclusion Criteria: * Cognitive or behavioral abnormalities. * Lower urinary tract symptoms. * Benign prostatic hyperplasia. * Angle-closure glaucoma. * Cardiac disease.
Where it's running
-
Mayo Hospital Lahore
Lahore, Punjab Province, Pakistan Recruiting
Study contacts
- Study coordinator: Saad A Malik, MBBS
- Email: saadazhar@live.com
- Phone: +92-3005107713
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.