New study tests pill to ease pain after varicose vein procedure
NCT ID NCT07390097
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether taking calcium dobesilate before and after radiofrequency ablation for varicose veins can reduce pain and improve quality of life. 250 adults with symptomatic varicose veins will be randomly assigned to receive the drug or standard care. The main goal is to measure pain levels one week after the procedure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- calcium dobesilate
- What this could lead to
- If it works, this could point toward a simple pill to ease pain and speed up recovery after varicose vein treatment.
- What could go wrong
- This is a Phase 4 trial, but it's still early and small. The drug may not reduce pain more than standard care, and side effects like stomach upset are possible.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 250 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Feb 2026
An estimate. Start dates often move.
- Expected to finish
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Nov 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 70 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age 18-70 years * Symptomatic primary varicose veins (CEAP classification C2-C4) * Great saphenous vein insufficiency confirmed by duplex ultrasound (reflux \>0.5 seconds) * Great saphenous vein diameter 5-12 mm * Scheduled for radiofrequency ablation * Able to provide written informed consent Exclusion Criteria: * History of deep vein thrombosis * Peripheral arterial disease (ABI \<0.9) * Active venous ulcer (CEAP C6) * Pregnancy or breastfeeding * Severe renal or hepatic insufficiency * Known allergy to calcium dobesilate * Use of venoactive drugs within the past 4 weeks * Current anticoagulant therapy * Previous venous intervention on the same limb * Bilateral disease requiring simultaneous treatment * Inability to comply with follow-up schedule
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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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Zonguldak Bulent Ecevit University Hospital, Department of Cardiovascular Surgery
Kozlu, Zonguldak Province, 67600, Turkey (Türkiye)
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