Bacillus Subtilis

Bacillus Subtilis Can Survive in Extreme Acidity

Bacillus spores can survive in extreme acidity of stomach, and tolerate bile salts and other hostile conditions of GIT. Besides, bacilli are more stable during processing and storage of food and pharmaceutical preparations, which make them more suitable ingredient for health promoting formulations. Thereby, in addition to human sources, Bacillus strains with probiotic attributes are also isolated from fermented or unfermented food sources and are commercialized in the form of diverse range of health supplements.
( Adewumi et al., 2014; Rao et al., 2015)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554123/

Lactobacillus Rhamnosus

Lactobacillus Rhamnosus Can Help With Digestive Issues

Lactobacillus Rhamnosus gg is an extremely well researched probiotic strain. It was patented in 1985 and there have been numerous studies proving more than 44 health benefits of this good bacteria. Lactobacillus gg, also known as Lactobacillus Rhamnosus gg, has extremely good intestinal wall adhesion and thus considered a good probiotic for clearing the way for your body’s native friendly bacterial strains. This probiotic is best for stimulating the immune system, fighting allergies and helping people have fewer sick days. Additionally it also has some digestive benefits for those with digestive issues. You can read more of L rhamnosus benefits below: Decrease leaky gut symptoms, Decrease IBS symptoms, Decrease constipation.
https://probiotics.org/lactobacillus-gg-benefits/

Lactobacillus Casei

L. Casei PLays an Important Role in Maintaining Good Bacteria for Digestion

You may barely give them a thought, but deep within your gut, there’s a whole world of living organisms. Maybe it sounds a bit unsettling, but most of them are there for your own good. One of those microorganisms is called Lactobacillus casei, or L. casei. It’s one of many friendly bacteria that call your digestive system home. You probably also have some in your urinary and genital tracts. These helpful organisms are also known as probiotics. Unlike the harmful bacteria that make you sick, probiotics like L. casei are beneficial to your digestive system. Actually, your body depends on them. Without them, it’s much harder to digest food and absorb important nutrients. They also help keep some of the more harmful microorganisms under control. If you don’t have enough of the good bacteria, things can get out of balance and cause trouble.
https://www.healthline.com/health/digestive-health/lactobacillus-casei

Lactobacillus Plantarum

L. Plantarum Has Been Shown to Reduce Gastrointestinal Problems

Probiotics have been shown to restore the microbiome to a more healthful and natural balance in an individual. The probiotic strains L. plantarum 299v and L. reteuri have been shown to reduce gastrointestinal symptoms such as diarrhea, inflammation, overgrowth of pathogenic bacteria and decreased intestinal barrier function. According to Orel, “several Lactobacillus reuteri strains exhibit various characteristics such as secretion of antimicrobial reuterin, production of short-chain fatty acids, down-regulation of inflammatory immune response, and direct influence on enteric nervous system among the others, which render them good candidates for prevention and treatment of various FGIDs”. L. rhamnosus GG has been shown to be effective in treating several gastrointestinal disorders such as IBS and is reported to be tolerated well and with no reports of adverse reactions.
https://www.imedpub.com/articles/using-probiotics-instead-of-pharmaceuticals-to-treat-gastrointestinal-disorders.php?aid=20152

Bifidobacterium Longum

Bifidobacterium Longum Strengthens the Barrier Against Stomach Acids

Bifidobacterium bifidum YIT 10347 was shown to adhere to stomach cells and promote production of mucin, improving the physical gastric barrier to acidic stomach content. Moreover, B. bifidum YIT 10347 regulates NF–kB signaling in more severe diseases, such as H. pylori-associated gastritis. The synergistic effects of these mechanisms can alleviate visceral hypersensitivity and improve the interactions between luminal contents and host esophageal epithelium.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7019778/

Bifidobacterium Breve

Bifidobacterium Breve Raises the Tolerance to Gastric Juices and Acids

In order to reach the gastrointestinal tract in sufficient numbers to exert a therapeutic effect, probiotic bacteria must resist the deleterious actions of low pH, elevated osmolarity and bile salts. Cloning the listerial betaine uptake system, BetL, into the probiotic strain Bifidobacterium breve UCC2003 significantly improved probiotic tolerance to gastric juice and conditions of elevated osmolarity mimicking the gut environment. Furthermore, whilst stable colonization of the murine intestine was achieved by oral administration of B. breve UCC2003, strains harbouring BetL were recovered at significantly higher levels. Finally, in addition to improved gastric transit and intestinal persistence, this approach improved the clinical efficacy of the probiotic culture.
https://www.microbiologyresearch.org/docserver/fulltext/micro/153/10/3563.pdf?expires=1599539360&id=id&accname=guest&checksum=B4D5A444E145E3856665351BF6066E9B

Lactobacillus Acidophilus

Lactobacillus Acidophilus Is Commonly Used for Acid Reflux Symptoms

Probiotic supplements containing Lactobacillus acidophilus are commonly used for heartburn and reflux symptoms. Probiotics or "friendly" bacteria may help maintain a balance in the digestive system between good and harmful bacteria. Lactobacillus acidophilus and Bifidobacterium lactis have the best evidence in their favor so look for those ingredients in your probiotic supplement.
https://www.goodrx.com/blog/dont-want-daily-medication-10-things-for-heartburn/#:~:text=Probiotic%20supplements%20containing%20Lactobacillus%20acidophilus,between%20good%20and%20harmful%20bacteria.