Not the parent poster, but I learned about S Boulardii from some German studies of probiotics. Boulardii at one point was one of the few that showed benefits in

Not the parent poster, but I learned about S Boulardii from some German studies of probiotics. Boulardii at one point was one of the few that showed benefits in randomized, double-blind, placebo-controlled trials. That was a while ago so don't know what the state of the research is now.