Clinical Trial of Vit D and Calcium for Recurrent BPPV
STOP Vertigo: Supplementation of Vitamin D for Termination of Recurrences From Benign Paroxysmal Positional Vertigo
1 other identifier
interventional
860
0 countries
N/A
Brief Summary
Randomized double blind placebo controlled trial of vitamin D supplements, with or without calcium supplementation, versus placebo in reduction of recurrences in BPPV.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Aug 2025
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 28, 2023
CompletedFirst Posted
Study publicly available on registry
May 18, 2023
CompletedStudy Start
First participant enrolled
August 1, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 1, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
September 1, 2026
June 25, 2025
June 1, 2025
1.1 years
April 28, 2023
June 20, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Recurrence rate of BPPV
how many recurrences of BPPV
1 year
Secondary Outcomes (7)
serum vitamin D levels (25(OH)D3)
1 year
proportion of serum vitamin D normalization
1 year
time to serum vitamin D normalization
1 year
proportion of recurrences
1 year
duration of recurrences
1 year
- +2 more secondary outcomes
Study Arms (2)
vitamin D +/- calcium supplementation
EXPERIMENTALpatients given Vitamin D 1000iu daily. Also given calcium 500mg BID daily if calcium deficient.
Placebo arm
PLACEBO COMPARATORpatients given 3 pills of placebo daily.
Interventions
vitamin D 1000iU daily +/- calcium 500mg BID daily
Eligibility Criteria
You may qualify if:
- Age 18 years or older
- or more distinct episodes of benign paroxysmal positional vertigo within a 12-month period on history
- At least 1 episode diagnosed based on physical examination by trained study personnel, meeting the diagnostic criteria of the BĂ¡rĂ¡ny Society
- Episodes separated in time, with a minimum of 1 week symptom-free between episodes
- Serum evidence of Vitamin D deficiency, as evidenced by 25-hydroxy vitamin D level of \<75 nmol/L (\<30 ng/mL)48
- Subject able to provide informed consent to participate in the study
You may not qualify if:
- Potential subjects will be excluded if they
- have another identifiable cause of vertigo identified on history or physical examination
- have a history of allergy or medically significant adverse reaction to vitamin D or calcium carbonate
- have a chronic medical disorder which is a contraindication to vitamin D or calcium carbonate supplementation, including uncontrolled hyperparathyroidism, nephrolithiasis, or GI malabsorption disorders
- are on loop diuretic agents or thiazides
- have a contraindication to routine bloodwork for study purposes, including being hospitalized with a critical illness, cellulitis at blood draw sites, or presence of vascular grafts.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Related Publications (43)
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MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Darren Tse, MD
Ottawa Hospita Research Institute
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Masking Details
- Enrolled subjects will be blinded to their treatment assignment. Both study staff and trial investigators will be blinded to treatment assignments and will remain blinded throughout the course of the trial. Randomization (treatment assignment) will be performed via computer algorithm based on subject ID. Randomization codes will be maintained in a password protected, encrypted file available only to the single unmasked investigator at each site, in order to prevent accidental unmasking of other trial personnel. All care will be taken to ensure that the study team are kept blinded. Pills, which will be dispensed at 3-month intervals, will be indistinguishable between groups. They will be dispensed in kits that are labeled as outlined in section 6.2 Study Drug Packaging and Labeling.
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Physician
Study Record Dates
First Submitted
April 28, 2023
First Posted
May 18, 2023
Study Start
August 1, 2025
Primary Completion (Estimated)
September 1, 2026
Study Completion (Estimated)
September 1, 2026
Last Updated
June 25, 2025
Record last verified: 2025-06
Data Sharing
- IPD Sharing
- Will not share