Anyone tried protocol suggested per this study? (ImmunoSEB and PrioBioSeb 14 days)

Not saying it should be, I really have no idea, but isn't this a red flag ?

The authors would like to thank Advanced Enzyme Technologies for sponsoring the clinical study, Specialty Enzymes & Probiotics for providing the supplements and the ProClin Research team for study conduct.
Conflicts of Interest
A.R. and S.J. are paid employees of Advanced Enzyme Technologies, which sponsored the study and has a corporate affiliation with Specialty Enzymes and Probiotics. Specialty Enzymes and Probiotics had no role in the study design and actual conduct of the study. N.S. has no conflict of interest to report."