Reply: Vitamin C as a Possible Therapy for COVID-19 Dear Editor: We appreciate the comment from Hemilä et al [1]. Previous studies based on in-vitro experiments have identified that high dosage intravenous Vit-C with copper and/or iron is virucidal [2]. However, despite these studies, the in-vivo virucidal activity of Vit-C has not been confirmed in detail. Previously, your meta-analyses of clinical trial data sho