Eligibility Module
The Eligibility Module contains detailed information about who can participate in the clinical trial. This includes eligibility criteria, age restrictions, gender requirements, healthy volunteer status, and study population descriptions, helping researchers understand who is eligible to participate in the study.
Eligibility Module path is as follows:
Study -> Protocol Section -> Eligibility Module
Eligibility Module
Ignite Creation Date:
2025-12-24 @ 10:46 PM
Ignite Modification Date:
2025-12-24 @ 10:46 PM
NCT ID:
NCT07128069
Eligibility Criteria:
Inclusion Criteria:
Subjects are able to participate if they:
1. Are 18 years or older.
2. Live in the United States.
3. Are interested in vitamin D as a potential preventive measure against COVID-19 in which they self-administer a daily dose of vitamin D during the 12-month study period.
4. Are willing to complete self-report measures at 5 time points over the course of 12 months by completing a 15-minute survey at intake via web and 10-minute web-based follow-up surveys.
Exclusion Criteria:
Subjects are excluded from study participation if they:
1. Report being pregnant, planning to become pregnant, and/or report breastfeeding during the study period.
2. Report a history of chronic kidney disease, including a history of abnormal GFR and/or creatinine.
3. Report a history of hyperparathyroidism.
4. Report a history of increased falls.
5. Report a history of hypercalcemia.
6. Report a history of gastrointestinal absorptive disorders, including having undergone bariatric surgery.
7. Report a history of kidney stones (1 in past year or 2 in lifetime).
8. Report already taking more than 400 IU of vitamin D daily as recommended by their health care provider, excluding multivitamins and excluding supplements that include vitamin D and calcium together.
9. Report taking D2.
10. Report a history of sarcoidosis.
Healthy Volunteers:
True
Sex:
ALL
Minimum Age:
18 Years
Study:
NCT07128069
Study Brief:
Protocol Section:
NCT07128069