2,024
Participants
Start Date
December 28, 2020
Primary Completion Date
July 1, 2024
Study Completion Date
July 1, 2024
vitamin D
Vitamin D softgel capsules; each capsule contains 3200 IU of vitamin D3. Three capsules per day (9600 IU/day) will be taken on days 1 and 2, and one capsule per day (3200 IU/day) will be taken on days 3 through 28
Placebo
Placebo softgel capsules. Three capsules per day will be taken on days 1 and 2, and one capsule per day will be taken on days 3 through 28
Brigham and Women's Hospital, Boston
Collaborators (1)
Harvard Medical School (HMS and HSDM)
OTHER
Harvard School of Public Health (HSPH)
OTHER
Fenway Health and Beth Israel Deaconess Medical Center
UNKNOWN
Tishcon Corporation
UNKNOWN
Takeda
INDUSTRY
Quest Diagnostics-Nichols Insitute
INDUSTRY
Laboratory Corporation of America
INDUSTRY
Trialfacts
UNKNOWN
Karolinska Institutet
OTHER
Philanthropic donations
UNKNOWN
Brigham and Women's Hospital
OTHER