Vitamin C and Viral Illness: A History Worth Understanding For decades, physicians practicing orthomolecular and integrative medicine have explored the use of high-dose vitamin C in severe viral illnesses—particularly in situations where conventional therapies offered limited benefit. This work often involved much higher doses than those used in studies intended to evaluate vitamin C for everyday immune support. In some historical reports, clinicians administered very large intravenous (IV) doses, sometimes recording outcomes in medical journals. Despite this documentation, much of the work remained outside mainstream clinical practice and was largely dismissed by conventional medicine. Renewed Scientific Interest During COVID-19 During the early stages of the COVID-19 pandemic, clinicians worldwide urgently sought supportive strategies to reduce complications associated with severe respiratory illness. In China, physicians explored intravenous vitamin C as supportive care in ho…