Effect of Weight Loss on Urinary Oxalate Excretion in Obese Calcium Oxalate Kidney Stone Formers
Public ClinicalTrials.gov record NCT04633811. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Effect of Weight Loss on Urinary Oxalate Excretion in Obese Calcium Oxalate Kidney Stone
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This protocol seeks to determine if weight reduction with the Optifast VLCD program leads to reduced contribution of endogenous oxalate synthesis and dietary oxalate absorption to the urinary oxalate pool in obese calcium oxalate stone formers.
Study identification
- NCT ID
- NCT04633811
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 14 participants
Conditions and interventions
Conditions
Interventions
- Low Oxalate Diet before Weight Loss Dietary Supplement
- Oral load of oxalate and sucralose before Weight Loss Dietary Supplement
- Optifast VLCD Program Dietary Supplement
- Optifast VLCD Transition Phase Dietary Supplement
- Low Oxalate Diet after Weight Loss Dietary Supplement
- Oral load of oxalate and sucralose after Weight Loss Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 19 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 2, 2021
- Primary completion
- Dec 30, 2025
- Completion
- Dec 30, 2026
- Last update posted
- Aug 31, 2026
2021 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Alabama at Birmingham | Birmingham | Alabama | 35243 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04633811, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 31, 2026 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04633811 live on ClinicalTrials.gov.