Effects of oral amino acid cystine (700 mg) and theanine (280 mg)
administration on SARS-CoV-2 virus infection - A case series
An amino acid supplement containing 700 mg of cystine and 280 mg of
theanine was administered to 4 patients during the treatment of
SARS-CoV-2 virus infection. Negative reactions on polymerase chain
reaction (PCR) testing were promptly obtained. Oral ingestion of
cysteine and theanine (C/T) may promote SARS-CoV-2 virus elimination.