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Nutritional Intervention for Constipation Symptoms in Patients With Parkinson's Disease

NCT07213856·1 site·ClinicalTrials.gov

What this study is about

Take this into the appointment.

Saves the questions and what to expect into your notes, next to the visit they belong to.

Keep this study

Maira Rozenfeld Olchik, PhD
CONTACT
+55 (51) 33083020 molchik@hcpa.edu.br

Lead

Hospital de Clinicas de Porto Alegre

Age

18–any

Sex

ALL

Healthy volunteers

Not accepted

You may be eligible if

Adults with a previous diagnosis of Parkinson's disease
On a stable dose of levodopa for at least 3 months
Diagnosis of Functional Constipation by the Rome IV protocol

You may not be if

Diagnosis of atypical or secondary parkinsonism
Hoehn and Yahr stage greater than 2
Presence of severe neurological or psychiatric disorders that impair the ability to participate in study procedures
Previous diagnosis of dementia
Presence of comorbidities such as active cancer, chronic obstructive pulmonary disease (COPD), heart failure, and/or chronic kidney disease
History of gastrointestinal cancers, inflammatory bowel diseases, or surgeries involving the gastrointestinal tract
Constipation secondary to clinical conditions such as hypothyroidism or diabetes mellitus
Use of opioids
Use of probiotics or antibiotics in the past 8 weeks
Continuous use of laxatives in the past 8 weeks
Presence of severe dysphagia according to the Functional Oral Intake Scale (FOIS)
Individuals receiving enteral or parenteral nutrition
Individuals under nutritional follow-up in the past 3 months

The record

StatusRecruiting

PhaseNot applicable

Taking part54

StartedApr 2026

UpdatedJun 16, 2026

Conditions

Parkinsons Disease (PD)Constipation - Functional

Where1

Hospital de Clínicas de Porto Alegre (HCPA)
Porto Alegre, Rio Grande do Sul, Brazil