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Double Blind Study for Effects of Donepezil Hydrochloride on Parkinson's Disease

Double Blind Study for Effects of Donepezil Hydrochloride on Parkinson's Disease - EDP2010 study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000003080
Enrollment
30
Registered
2010-01-30
Start date
2010-01-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Parkinson&#39

Interventions

Donepezil hydrochloride (3mg for 2 weeks, 5mg for 2 weeks) Placebo

Sponsors

Clinical Research Center, Utano National Hospital, National Hospital Organization
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) UK brain bank Parkinson's disease diagnostic criteria (steps 1 and 2) 2) Hoehn-Yahr stages (I to III) 3) Not taking donepezil hydrochloride or other AchE inhibitors in the preceding 4 weeks. 4) Subjects who gave the written informed consent.

Exclusion criteria

Exclusion criteria: 1) Subjects taking anti-cholinergic drugs, including trihexyphenidyl, biperidien, profenamine, piroheptine, metixene, mazaticol, promethazine, cyproheptadine. 2) Subjects with diffuse Lewy body disease (according to third report of the DLB consortium) . 3) Present or previous diagnosis of schizophrenia. 4) Severe liver dysfunction or severe renal dysfuction. 5) Present or previous diagnosis of sick sinus syndrome 6) Present or previous diagnosis of broncheal asthma. 7) Subjects who investigators judge as inappropriate.

Design outcomes

Primary

MeasureTime frame
Changes in UPDRS-3 from the baseline condition

Secondary

MeasureTime frame
Changes in UPDRS-1, 2, and total UPDRS from the baseline condition

Countries

Japan

Contacts

Public ContactHideyuki Sawada

Utano National Hospital, National Hospital Organization Clinical Research Center

sawada@unh.hosp.go.jp075-461-5121

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026