400
Participants
Start Date
April 2, 2025
Primary Completion Date
January 30, 2026
Study Completion Date
January 30, 2027
Vitamin C
Participants swallow synthetic vitamin C tablets 500mg with water, twice a day.
Placebo
Participants swallow tablets with the same texture, flavor, and appearance as the experimental group 500mg with water, twice a day.
ENROLLING_BY_INVITATION
Peking University Third Hospital, Beijing
RECRUITING
People's Hospital of Quzhou, Quzhou
RECRUITING
The first affiliated hospital of Nanchang University, Nanchang
The First Affiliated Hospital of Nanchang University
OTHER
People's Hospital of Quzhou
OTHER
Peking University Third Hospital
OTHER