Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
Public ClinicalTrials.gov record NCT04556136. 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
A Pilot Feasibility Study Comparing a Novel Phototherapy Kiosk to Supplementation to Promote Vitamin D Sufficiency
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral vitamin D3 supplement of 600 IU taken daily over a 10 week intervention period. We will conduct a randomized controlled trial with two treatment arms; \~120 volunteers will be assigned to either the SPK or to a 600 IU daily oral vitamin D3 supplement for 10 weeks. The SPK is an innovative, networked, self-care technology that stimulates endogenous vitamin D production with two \~2-minute treatments per month. It will be tested in an ambulatory setting where enrolled/assigned participants of various baseline levels of 25(OH)D will present for a treatment dose, based on Fitzpatrick skin type category, every other week for 10 weeks. The SPK does not produce a cosmetic tan or dispense pills.
Study identification
- NCT ID
- NCT04556136
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 106 participants
Conditions and interventions
Conditions
Interventions
- Standing Phototherapy Kiosk Device
- D3 Oral supplement Dietary Supplement
Device · Dietary Supplement
Eligibility (public fields only)
- Age range
- 18 Years to 69 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 29, 2018
- Primary completion
- Jan 21, 2019
- Completion
- Mar 31, 2019
- Last update posted
- Mar 12, 2024
2018 – 2019
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Madigan Army Medical Center | Tacoma | Washington | 98431 | — |
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 NCT04556136, 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 Mar 12, 2024 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04556136 live on ClinicalTrials.gov.