Vaccine-induced respiratory mucosal immunity is vital for protection against SARS-CoV-1 in animal models [46], and greater numbers of total tissue-resident T cells in the lungs have been associated with protection from severe COVID-19 [47, 48]
Here's what else we know about potential side effects of glutathione per format
2005a;3:2828
This is a legitimate but limited form of evidence, and honesty requires labeling it as such
B., Drmic, D., Grgic, T., Strbe, S., Zukanovic, G., Crvenkovic, D., Madzarac, G., Rukavina, I., Sucic, M., Baric, M., Starcevic, N., Krstonijevic, Z., Bencic, M
I think we can safely say the overwhelming answer would be (b)