Accidentally stumbled across this product called "Immunobiotic Immuno-LP20" [link here]. It sounds great (doesn't everything?) but I am skeptical that it could do much. It seems to me that they are promoting this as a cross between a probiotic and a vaccine. It seems to be neither. It is a killed microbe, so it cannot function as a probiotic. It seems a bit of a stretch to think a dead microbe could have much of an effect in the gastrointestinal tract. Wouldn't the GI tract be the last place for vaccine-like activity? I don't have a scientific background but would be interested in the views of those who do. It looks like we could be seeing a bunch of similar products hitting the market. @Jonathan Edwards what do you make of this?