Folic acid's effect on Parkinson's patients taking levodopa

Effect of Folic Acid on Motor Aspects of Daily Living and Oxidative Stress in Levodopa Treated Parkinson's Disease Patients: A Randomized, Double-Blind, Placebo Controlled Trial

Phase 2 Interventional Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh · NCT05959044

This study is testing if taking folic acid can help people with Parkinson's who are on levodopa feel better and reduce side effects.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment60 (estimated)
Ages18 Years and up
SexAll
SponsorBangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh Academic / other
Locations1 site (Dhaka)
Trial IDNCT05959044 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the impact of folic acid supplementation on patients with Parkinson's disease who are being treated with levodopa. It is a randomized, double-blind, placebo-controlled study conducted at Bangabandhu Sheikh Mujib Medical University, where 60 patients will be assigned to receive either folic acid or a placebo for 8 weeks. The study aims to assess the safety and efficacy of folic acid in reducing levodopa-induced side effects and improving overall symptoms of Parkinson's disease. Evaluations will be conducted using the MDS-Unified Parkinson's Disease Rating Scale at baseline and after the treatment period.

Who should consider this trial

Good fit: Ideal candidates are patients diagnosed with mild to moderate Parkinson's disease who have been on levodopa for at least 6 months and have elevated homocysteine levels.

Not a fit: Patients with secondary parkinsonism, those who have undergone prior stereotactic surgery, or individuals with known hypersensitivity to folic acid may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the management of Parkinson's disease by reducing side effects associated with levodopa treatment.

How similar studies have performed: Previous studies have shown promising results in animal models regarding the benefits of folic acid in reducing levodopa-induced dyskinesia, but this specific approach in humans is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosed PD patients taking levodopa for at least 6months.
* Mild to moderate Parkinson's disease patient according to Hoehn and Yahr staging, stage -I, II, III
* Homocysteine level ≥ 13 µmol/L

Exclusion Criteria:

* Secondary causes of parkinsonism
* Prior stereotactic surgery for PD
* Suffering from active malignancy
* Known hypersensitivity to folic acid
* Multivitamin supplementation within 30 days of enrollment
* Patients taking anticonvulsant, oral contraceptive pill, disease modifying anti-rheumatic drugs
* Pregnancy or lactating mother
* Has any clinically significant medical condition that could interfere with the subject's ability to safely participate in the study or to be followed

Where this trial is running

Dhaka

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Parkinson Disease
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.