Vitamin C for COVID-19 Treatment ARDS is the most common complication of COVID-19. The oxidative stress in this condition produces cytokines and free radicals. It leads to cellular malfunction and damage which ultimately leads to organ failure. To prevent deterioration of condition, a hypothesis suggests intravenous Vitamin C. The data is insufficient to recommend its use to COVID-19 patients. Here is complete guideline for use of Vitamin C: https://www.covid19treatmentguidelines.nih.gov/supplements/vitamin-c/