Could a cheap heart pill calm restless legs in dialysis patients?
NCT ID NCT07199504
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether dipyridamole, a drug usually used for heart conditions, can reduce the uncomfortable urge to move the legs in people with kidney failure who are on dialysis. About 80 adults will take the drug three times a day for 12 weeks. Researchers will measure changes in leg symptoms, mood, sleep, and quality of life, and watch for side effects.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2/3
Runs two stages together: whether the treatment works, then large-scale confirmation.
- Participants
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About 80 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: (1) Maintenance hemodialysis for ≥3 months;(2) Age between 18-75 years;(3) Diagnosed with Restless Legs Syndrome (RLS) according to IRLSSG standards with a score \>15;(4) Willing to cooperate with this study. Exclusion Criteria: (1). Patients with other cerebrovascular, muscular, and movement system diseases affecting the assessment of RLS;(2). Patients with active bleeding, such as gastrointestinal bleeding or intracerebral hemorrhage;(3). Patients who have been on dipyridamole for a long time;(4). Patients who have taken other medications that may affect RLS in the last 3 weeks, such as dopamine agonists/antagonists, tricyclic antidepressants, lithium, etc.;(5). Patients with a history of psychosis;(6). Pregnant or breastfeeding women;(7). Patients who are allergic or intolerant to dipyridamole;(8). Patients who cannot or are unwilling to cooperate with this study.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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First Affiliated Hospital of Chongqing Medical University
RECRUITINGChongqing, Chongqing Municipality, 400016, China