2 Subjects and Methods
The subjects were 4 patients admitted to our hospital under a diagnosis
of SARS-CoV-2 virus infection. All patients had positive reactions on
polymerase chain reaction (PCR) testing and symptoms such as fever and
dysosmia. They were hospitalized as mild-status patients. A supplement
containing cystine (700 mg) and theanine (280 mg) at a total volume of
1.5 g was orally administered once a day from X month 15th until
discharge in all patients. While continuing standard treatment, the
presence of the virus was examined using PCR testing. After confirming
negative reactions on two consecutive sessions of PCR testing, which
comprised a criterion for discharge, the patients were discharged. We
investigated supplement compliance after the start of administration,
PCR testing results, and the interval from the start of supplement
administration until negative reactions on two consecutive sessions of
PCR testing were obtained.