saccharomyces boulardii let medicine be thy food.” Hippocrates 460BC Let supplements be thy medicine & let medicine be thy supplement it is written in the Holy King James Bible the word of the Lord according to saint Moses the prophet of israel 1450 BC Before Christ Genesis 1:29 & God said, Behold, I have given you every herb bearing seed, which is upon the face of all the earth, & every tree, in the which is the fruit of a tree yielding seed; to you it shall be for meat. amen Tantum ergo sacramentum veneremur cernui : et antiquum documentum novo cedat ritui ; praestet fides supplementum sensuum defectui , genitori, genitoque laus et jubilatio , honor , virtus quoque sit et benedictio , procedenti ab utroque , compar sit laudatio. God has provided supplements for healing every human is special to God with each person bearing a signature  peculiar fingerprint ,Saccharomyces boulardii is a tropical yeast first isolated from lychee and mangosteen fruit peel in 1923 by French scientist Henri Boulard. Although early reports claimed distinct taxonomic, metabolic, and genetic properties, S. boulardii is genetically a grouping of S. cerevisiae strains, sharing >99% genomic relatedness, giving the synonym S. cerevisiae var. boulardii S. boulardii is sometimes used as a probiotic with the purpose of introducing beneficial microbes into the large and small intestines and conferring protection against pathogens. It grows at 37 °C (98.6 °F). In addition, the popular genome-editing tool CRISPR-Cas9 was proven to be effective in S. boulardii. Boulard first isolated this yeast after he observed natives of Southeast Asia chewing on the skin of lychee and mangosteen in an attempt to control the symptoms of cholera. In healthy people, S. boulardii has been shown to be nonpathogenic and nonsystemic (it remains in the gastrointestinal tract rather than spreading elsewhere in the body).People commonly use S. boulardii for treating and preventing diarrhea, including rotaviral diarrhea in children. It's also used for other types of diarrhea, acne, a digestive tract infection that can lead to ulcers, and many other conditions, there is good scientific evidence to support many of its other uses.Several clinical trials and experimental studies strongly suggest a place for Saccharomyces boulardii as a biotherapeutic agent for the prevention and treatment of several gastrointestinal diseases. S. boulardii mediates responses resembling the protective effects of the normal healthy gut flora. The multiple mechanisms of action of S. boulardii and its properties may explain its efficacy and beneficial effects in acute and chronic gastrointestinal diseases that have been confirmed by clinical trials.There is increasing evidence that the gastrointestinal microflora is a major regulator of the immune system, not only in the gut, but also in other organs. The nonpathogenic yeast Saccharomyces boulardii has been prescribed in the past 30 years for prophylaxis and treatment of diarrheal diseases caused by bacteria. Importantly, S. boulardii has demonstrated clinical and experimental effectiveness in gastrointestinal diseases with a predominant inflammatory component, indicating that this probiotic might interfere with cellular signaling pathways common in many inflammatory conditions. An increasing number of potential health benefits are being attributed to probiotic treatments S. boulardii is a live yeast used extensively as a probiotic and often marketed as a dietary supplement . Several mechanisms of action have been identified directed against the host as well as pathogenic microorganisms and include regulation of intestinal microbial homeostasis, interference with the ability of pathogens to colonize and infect the mucosa, modulation of local and systemic immune responses, stabilization of the gastrointestinal barrier function and induction of enzymatic activity favoring absorption and nutrition it is written in the Holy King James Bible the revelation of saint John the apostle 50 AD Anno Domini in the year of our Lord Jesus Christ Revelation 22:2 In the midst of the street of it, & on either side of the river, was there the tree of life, which bare twelve manner of fruits, & yielded her fruit every month: & the leaves of the tree were for the healing of the nations. amen Hallelujah Hallelujah Blessed be the word of the Lord for Christ is risen Hallelujah Hallelujah  peace be still in Nomine Patris et FiLii et Spiritus Sancti amen
https://www.youtube.com/watch?v=nYf_yaXj1M8
Mode of action of Saccharomyces boulardii CNCM I-745