NCT04596657

Vitamin D3 Supplementation to Prevent Respiratory Tract Infections

Vitamin D3 Supplementation to Prevent Respiratory Tract Infections, Including Covid-19, in Hospital Workers: a Pragmatic Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 877 (actual)
• Sponsor: The Cooper Health System · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The Cooper vitamin D3 study is a randomized study investigating whether daily vitamin D3 supplementation can prevent respiratory tract infections, influenza-like illness and covid-19 in hospital workers.

Detailed description

Influenza-like illness and covid-19 were added to this summary because the protocol uses respiratory tract infections and influenza-like illness interchangeably. Influenza-like illness is more accurate. Protocol amendments: Protocol title was amended to include covid-19. Minimum age was changed from 52 to 18, expanding the sample size. Exclusion criteria re vitamin D intake was changed from \>5000 to \>=5000 IU.

Conditions

• Respiratory Tract Infections
• Covid19
• Flu Like Illness

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Vitamin D supplementation	Daily vitamin D3 supplementation (5000 IU)

Timeline

• Start date: 2020-10-27
• Primary completion: 2021-11-23
• Completion: 2023-10-19
• First posted: 2020-10-22
• Last updated: 2023-12-08

Locations

1 site across 1 country: United States