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Prospective, Open-Label, Single-Center Pilot Study on the Efficacy of Daily Tadalafil in Early-Stage Parkinson’s Disease

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-521819-39-00
Acronym
TAD-PD
Enrollment
20
Registered
2026-01-05
Start date
Unknown
Completion date
Unknown
Last updated
2026-01-05

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

Conditions

Parkinson's disease

Brief summary

Change in motor symptoms using the MDS-UPDRS part III from baseline to two weeks after daily tadalafil administration.

Detailed description

All adverse events will be recorded during follow-up. The following specific side effects will be assessed (yes/no): 1) Headache, 2) Dyspepsia, 3) Back pain, 4) Muscle pain, 5) Flushing, 6) Nasal congestion, 7) Unwanted erections, and 8) Changes in libido. Blood pressure (mmHg) and heart rate (bpm) will be measured at baseline and after two weeks., Participant’s evaluation of the burden of the treatment after two weeks follow-up will be measured with a five-point Likert-type item., Participant’s satisfaction on the outcome of treatment after two weeks follow-up will be measured with a five-point Likert scale.

Interventions

DRUGTADALAFIL

Sponsors

Amsterdam UMC Stichting
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Change in motor symptoms using the MDS-UPDRS part III from baseline to two weeks after daily tadalafil administration.

Secondary

MeasureTime frame
All adverse events will be recorded during follow-up. The following specific side effects will be assessed (yes/no): 1) Headache, 2) Dyspepsia, 3) Back pain, 4) Muscle pain, 5) Flushing, 6) Nasal congestion, 7) Unwanted erections, and 8) Changes in libido. Blood pressure (mmHg) and heart rate (bpm) will be measured at baseline and after two weeks., Participant’s evaluation of the burden of the treatment after two weeks follow-up will be measured with a five-point Likert-type item., Participant’s satisfaction on the outcome of treatment after two weeks follow-up will be measured with a five-point Likert scale.

Countries

Netherlands

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026