>>165153 pb
>including the potency of strains, the optimal dosages, the combination of probiotics, their habitat in the host, the host response, and other pertinent factors.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10893534/

I know they do FMT (gut bacteria transplants) and families or people living together will share the same gut bacteria but there are complications and it looks like it needs to be specific to the person. This study points to this. In treating a person everyone requires a personal intake, an investigation.