Abstract

Objective: Coronavirus disease 2019 (COVID-19), first identified in December 2019, triggered an unprecedented pandemic, and vaccines were developed and administered rapidly in response. These measures substantially reduced overall infection rates, progression to severe disease, and mortality. Reports of adverse events also continued. In some individuals, post-vaccination reactions persisted, sometimes termed chronic vaccine-induced syndrome, and no established management is available. Therefore, practical guidelines and therapeutic options are needed. Case Report: A Korean woman in her 70s developed dyspnea, loss of taste, and poor appetite after COVID-19 vaccination. The symptoms persisted and led to several emergency department visits. Subsequent evaluation identified valvular heart disease and suspected tuberculosis. Conventional pharmacotherapy was attempted but provided no meaningful relief. Ortho-Cellular Nutrition Therapy (OCNT) was initiated with β-glucan, glycine, anthocyanins, omega-3 fatty acids, Panax notoginseng, fermented soybean extract, and postbiotics. The patient reported steady improvement in breathing, taste, and appetite. She returned to normal daily activities and noted better stamina and quality of life. Conclusion: Because this case involved a single patient, its applicability to all patients with vaccine-related adverse reactions is limited. Nevertheless, the symptom relief achieved with appropriate OCNT in symptoms that had not improved over a prolonged period is considered meaningful.