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A randomized, double blind, comparative study of vitamin D3 versus placebo in patients with Parkinson disease aged between 45 and 85 years old to improve neurological signs and quality of life

A randomized, double blind, comparative study of vitamin D3 versus placebo in patients with Parkinson disease aged between 45 and 85 years old to improve neurological signs and quality of life - RCT with vitamin D for Parkinson disease

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000001841
Enrollment
120
Registered
2009-04-02
Start date
2009-04-01
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 disease

Interventions

Sponsors

Jikei University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Enrollment at Jikei University Aoto hospital 2. Obtained informed consent 3. Age 45 and more and less than 85 years old

Exclusion criteria

Exclusion criteria: 1. Already taking vitamin D supplement or 1,25 vitamin D 2. History of kidney stone 3. Familial or early onset (< 55 years old) type of Parkinson disease 4. Osteoporosis 5. Other difficulties judged by the physician in charge

Design outcomes

Primary

MeasureTime frame
changes of UPDRS, HY stage, MMSE

Secondary

MeasureTime frame
changes of PDQ-39 and EQ-5D

Countries

Japan

Contacts

Public ContactEmi Suzuki

Jikei University School of Medicine Division of Molecular Epidemiology

urashima@jikei.ac.jp

Outcome results

None listed

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