High-Dose Multivitamins Compared to a Placebo in Preventing the Recurrence of Cancer in Patients With Early Stage Bladder Cancer
Public ClinicalTrials.gov record NCT00003623. 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
Megadose Vitamins as Chemoprevention of Transitional Cell Carcinoma of the Bladder
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of high-dose multivitamins may be an effective way to prevent the recurrence of early stage bladder cancer. It is not yet known whether high-dose vitamins are more effective than no further therapy in decreasing the risk of early-stage bladder cancer. PURPOSE: Randomized double-blinded phase III trial to compare the effectiveness of high-dose multivitamins with a placebo in preventing the recurrence of cancer in patients with early stage bladder cancer.
Study identification
- NCT ID
- NCT00003623
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 21 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- 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
- Sep 30, 1999
- Primary completion
- Feb 28, 2003
- Completion
- Feb 28, 2003
- Last update posted
- Jul 12, 2016
1999 – 2003
United States locations
- U.S. sites
- 16
- U.S. states
- 9
- U.S. cities
- 16
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| CCOP - Scottsdale Oncology Program | Scottsdale | Arizona | 85259-5404 | — |
| CCOP - Carle Cancer Center | Urbana | Illinois | 61801 | — |
| CCOP - Cedar Rapids Oncology Project | Cedar Rapids | Iowa | 52403-1206 | — |
| CCOP - Iowa Oncology Research Association | Des Moines | Iowa | 50309-1016 | — |
| Siouxland Hematology-Oncology | Sioux City | Iowa | 51101-1733 | — |
| CCOP - Wichita | Wichita | Kansas | 67214-3882 | — |
| CCOP - Ann Arbor Regional | Ann Arbor | Michigan | 48106 | — |
| CCOP - Duluth | Duluth | Minnesota | 55805 | — |
| Mayo Clinic Cancer Center | Rochester | Minnesota | 55905 | — |
| CentraCare Clinic | Saint Cloud | Minnesota | 56303 | — |
| Medcenter One Health System | Bismarck | North Dakota | 58501 | — |
| CCOP - Merit Care Hospital | Fargo | North Dakota | 58122 | — |
| Altru Health Systems | Grand Forks | North Dakota | 58201 | — |
| CCOP - Toledo Community Hospital Oncology Program | Toledo | Ohio | 43623-3456 | — |
| Rapid City Regional Hospital | Rapid City | South Dakota | 57709 | — |
| CCOP - Sioux Community Cancer Consortium | Sioux Falls | South Dakota | 57105-1080 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 1 non-U.S. site.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00003623, 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 Jul 12, 2016 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00003623 live on ClinicalTrials.gov.