Frozen shoulder breakthrough? losartan plus exercise tested in new trial
NCT ID NCT07513350
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether adding the blood pressure medication losartan to a standard exercise program can improve pain, movement, and function in people with frozen shoulder. About 33 adults with frozen shoulder will be randomly assigned to receive either exercise alone or exercise plus losartan for four weeks. Researchers will measure shoulder function, pain levels, and range of motion at the start, after four weeks, and again at eight weeks.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 33 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2026
- Expected to finish
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Jan 2027
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 years and older
- 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: * Adults aged 18 years or older diagnosed with frozen shoulder (adhesive capsulitis) * Having less than 50% of range of motion (ROM) in at least one of the following shoulder movements compared to the unaffected side: external rotation, abduction, flexion, or internal rotation * Having more than 25% loss of ROM in at least two movement planes compared to the unaffected shoulder * Patients in stage II or III of frozen shoulder Exclusion Criteria: * Women who are pregnant, breastfeeding, or planning pregnancy during the study * Patients in stage I of frozen shoulder * Patients diagnosed with inflammatory or other types of arthritis due to autoimmune diseases affecting the shoulder * Patients with rotator cuff pathology and/or glenohumeral arthritis * Patients with a history of prior shoulder infection * Patients with hypotension * Patients who have undergone previous upper extremity surgery or plan to undergo upper extremity surgery during the study period * Patients with allergy to losartan or its active/inactive components * Patients taking medications known to have adverse interactions with losartan * Patients who, in the investigator's opinion, have any medical condition, laboratory abnormality, or history that could pose risk, contraindicate participation, affect the conduct, objectives, or evaluation of the study, or prevent full participation in the 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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Istanbul University-Cerrahpasa
RECRUITINGIstanbul, Turkey (Türkiye)
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Stretch device vs. physical therapy: which loosens a frozen shoulder?
- Gentle organ mobilization may ease frozen shoulder pain
- Saline stretch: could a Fluid-Filled injection unfreeze stiff shoulders?
- Frozen shoulder: ultrasound gel or muscle exercises — which works better?
- New combo therapy eases frozen shoulder pain and stiffness
- Shock wave therapy tested for stubborn frozen shoulder pain