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NCT Number: NCT07229651

Metformin in Parkinson Disease

The clinical manifestations of Parkinson's disease (PD), a chronic neurodegenerative condition, include resting tremor, hypokinesia, bradykinesia, stiffness and postural instability. These motor symptoms are caused by a selective loss and degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc) region, which leads to a dopamine (DA) insufficiency in the striatum

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Key information

Conditions

Parkinson Disease Basal Ganglia Diseases Brain Diseases Central Nervous System Diseases Movement Disorders Nervous System Diseases Neurodegenerative Diseases Parkinsonian Disorders Synucleinopathies

Age range

50 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2 / Phase 3

Primary location

Tanta University

Tanta, 31511, Egypt

Location status: Recruiting

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Eligible participants were men and women aged 50 years or older with a confirmed diagnosis of PD Patients receiving levodopa/carbidopa therapy.

Exclusion criteria

Secondary causes of parkinsonism Patients taking anti-inflammatory drugs Atypical parkinsonian syndromes Prior stereotaxic surgery for Parkinson's disease Pregnancy and lactation Cardiovascular disease patients Patients with coagulation disorders Suffering from active malignancy Addiction to alcohol and / or drugs Known allergy to the studied medications

Treatment and study plan

Levodopa Carbidopa

Drug

Carbidopa/levodopa, also known as levocarb and co-careldopa, is the combination of the two medications carbidopa and levodopa. It is primarily used to manage the symptoms of Parkinson's disease

metformin

Drug

Metformin, sold under the brand name Glucophage, among others, is the main first-line medication for the treatment of type 2 diabetes, particularly in people who are overweight.

Primary outcomes

  1. change in The Unified Parkinson's Disease Rating Scale (UPDRS).

    Time frame: 6 months

    The unified Parkinson's disease rating scale is used to follow the longitudinal course of Parkinson's disease. The UPD rating scale is the most commonly used scale in the clinical study of Parkinson's disease.

Secondary outcomes

  1. Change in PDQ-39

    Time frame: 6 months

    The Parkinson's Disease Questionnaire-39 (PDQ-39) is a widely recognized, disease-targeted, self-administered tool that captures patients' perspectives on how Parkinson's disease influences their health-related quality of life

Interested in participating?

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Interested in participating?

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Sponsors and collaborators

Lead sponsor

Tanta University

Other

Registry information

Official study title

Safety and Efficacy of Metformin in Patients With Parkinson Disaese

Important dates

Study start
2025
Primary completion
2026
Study completion
2027
First posted
Nov 17, 2025
Registry last updated
Nov 21, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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