
"Exploring the Efficacy of Intravenous Vitamin C for COVID-19 Hospitalized Patients"
Two prospectively harmonized randomized clinical trials, involving 2,590 patients hospitalized with COVID-19, investigated the efficacy of intravenous vitamin C in improving organ support-free days and hospital survival. The trials found that vitamin C had a low probability of improving the primary composite outcome of organ support-free days and hospital survival in both critically ill patients and those who were not critically ill. The posterior probabilities for efficacy were 8.6% among critically ill patients and 2.9% among non-critically ill patients. The trials were terminated early due to statistical triggers for harm and futility being met.

