This site cites five specific sources worth checking directly rather than assuming what they cover, spanning several different types of publication.
Chicory Root Inulin and prebiotic fermentation research on NCBI, resistant starch and digestive health on WebMD, a Bifidobacterium infantis overview on Healthline, a Clostridium butyricum entry on Wikipedia, and Akkermansia muciniphila and metabolic health research on PubMed.
This site mixes peer-reviewed research platforms with consumer-health sites and an encyclopedia entry — worth reading each source type differently, and remembering none represents a trial of the finished SodaTide formula.