Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 15 Researches
7.1
USERS' SCORE
Moderately Good
Based on 134 Reviews
7.5
Supplement Facts
Serving Size: 1 Capsule
Amount Per Serving
%DV
Saccharomyces boulardii(an S. cerevisiae Strain)
250 mg(5 Billion CFU)
MOS Yeast Fraction(Min. 35% Manno-oligosaccharides [MOS]) (S. cerevisiae)
200 mg

Top Medical Research Studies

We analyzed data from two clinical trials involving 579 individuals with Irritable Bowel Syndrome (IBS) to determine how CNCM I-3856 affects symptoms like bloating.

Our findings revealed that during the second month of supplementation, participants experienced significant reductions in both abdominal pain and bloating—up to 14.9% compared to those taking a placebo.

While intestinal symptoms improved, there were no significant differences observed between groups at the end of treatment. However, stool consistency was notably better in those taking CNCM I-3856.
Read More
We looked into how probiotics, like Saccharomyces boulardii, can help prevent antibiotic-associated diarrhea (AAD) in children. Involving 23 studies with nearly 4,000 participants, our findings indicate a significant benefit from probiotics, with AAD occurring in 8% of the probiotic group versus 19% in the control group.

It appears that probiotics, particularly certain strains, can help keep children's gut health intact during antibiotic treatments. While no serious side effects were recorded, some mild issues like bloating were noted. Overall, moderate evidence supports using these probiotics to ward off AAD.
Read More
8
Probiotic treatment resolved infection
We examined a case involving a 41-year-old man who suffered from cramps, bloating, and watery diarrhea after drinking non-potable water. While initial tests ruled out gluten intolerance and other infectious agents, a deeper analysis eventually identified the presence of Blastocystis hominis. This protozoan is known to be associated with chronic intestinal issues and can be waterborne. Remarkably, treatment with the probiotic Saccharomyces boulardii seemed to effectively resolve the infection. This suggests that Saccharomyces boulardii might offer a beneficial approach for managing similar cases.
Read More

Most Useful Reviews

9
Bloating relief
141 people found this helpful
Saccharomyces Boulardii was highly recommended to me, and it definitely works. After two weeks, I noticed significant improvements—my bloating after meals ceased, and the discomfort and gases disappeared. I take two capsules before bed, and I feel much better overall. This product is essential for anyone dealing with gastrointestinal issues. Highly recommend!
Read More
7.5
Constipation relief
127 people found this helpful
This supplement is fantastic; it alleviates constipation and stops bloating effectively. My gut feels much better since taking it.
Read More
7.5
Bloating reduction
48 people found this helpful
These probiotics are remarkable. They help restore intestinal microflora, reduce bloating, and improve my skin condition. I'm pleased with the results so far.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 15 Researches
7.1
  • All Researches
We looked into how probiotics, like Saccharomyces boulardii, can help prevent antibiotic-associated diarrhea (AAD) in children. Involving 23 studies with nearly 4,000 participants, our findings indicate a significant benefit from probiotics, with AAD occurring in 8% of the probiotic group versus 19% in the control group.

It appears that probiotics, particularly certain strains, can help keep children's gut health intact during antibiotic treatments. While no serious side effects were recorded, some mild issues like bloating were noted. Overall, moderate evidence supports using these probiotics to ward off AAD.
Read More
8
Probiotics significantly reduce bloating
We explored the effectiveness of the probiotic supplement Saccharomyces boulardii in reducing bloating and gastric pain among airline pilots suffering from chronic non-atrophic gastritis.

Over four weeks, participants were divided into groups receiving different doses of the probiotic or undergoing watchful waiting.

The results showed that both probiotic doses significantly improved symptoms compared to the control group, but only the high-dose led to notable changes in certain serum markers.

Overall, this suggests that Saccharomyces boulardii could help ease bloating and gastric discomfort in situations where these issues are common.
Read More
In this clinical trial, we evaluated the impact of Saccharomyces boulardii on patients with small intestinal bacterial overgrowth (SIBO) related to systemic sclerosis (SSc).

We examined the effects of S. boulardii alone, with metronidazole, or in combination for two months.

Results showed that both S. boulardii and the combination treatment significantly reduced gastrointestinal symptoms, including bloating, while metronidazole alone had limited success.

Overall, S. boulardii proves beneficial, giving hope to those suffering from related discomfort.
Read More
8
Probiotic treatment resolved infection
We examined a case involving a 41-year-old man who suffered from cramps, bloating, and watery diarrhea after drinking non-potable water. While initial tests ruled out gluten intolerance and other infectious agents, a deeper analysis eventually identified the presence of Blastocystis hominis. This protozoan is known to be associated with chronic intestinal issues and can be waterborne. Remarkably, treatment with the probiotic Saccharomyces boulardii seemed to effectively resolve the infection. This suggests that Saccharomyces boulardii might offer a beneficial approach for managing similar cases.
Read More
8
Probiotics reduce pediatric AAD risk
We explored how probiotics might help prevent antibiotic-associated diarrhea (AAD) in children. By analyzing 23 studies involving almost 4,000 young participants, we found that probiotics significantly reduced AAD incidence compared to placebo or no treatment.

Specifically, AAD occurred in 8% of children receiving probiotics versus 19% in the control groups. We noted that Lactobacillus rhamnosus and Saccharomyces boulardii were among the most effective strains.

While adverse events were mild and rare, further research is needed regarding other probiotic strains, especially for at-risk children.
Read More

User Reviews

USERS' SCORE
Moderately Good
Based on 134 Reviews
7.5
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Bloating relief
141 people found this helpful
Saccharomyces Boulardii was highly recommended to me, and it definitely works. After two weeks, I noticed significant improvements—my bloating after meals ceased, and the discomfort and gases disappeared. I take two capsules before bed, and I feel much better overall. This product is essential for anyone dealing with gastrointestinal issues. Highly recommend!
Read More
7.5
Constipation relief
127 people found this helpful
This supplement is fantastic; it alleviates constipation and stops bloating effectively. My gut feels much better since taking it.
Read More
7.5
Bloating reduction
48 people found this helpful
These probiotics are remarkable. They help restore intestinal microflora, reduce bloating, and improve my skin condition. I'm pleased with the results so far.
Read More
7.5
Bloating improvement
34 people found this helpful
Suffering from ulcerative colitis, I began using this product on my doctor's advice. After a few weeks, I experienced regular bowel movements, less cramping, and significantly reduced bloating. Overall, I feel better and even noticed smoother skin.
Read More
9
Digestion support
33 people found this helpful
After suffering from rotavirus, I started taking Boulardi sugaryomycetes, and they dramatically improved my digestion and bowel function within days. They are also invaluable when taking antibiotics and for maintaining intestinal health.
Read More

Frequently Asked Questions

9
Bloating relief
141 people found this helpful
Saccharomyces Boulardii was highly recommended to me, and it definitely works. After two weeks, I noticed significant improvements—my bloating after meals ceased, and the discomfort and gases disappeared. I take two capsules before bed, and I feel much better overall. This product is essential for anyone dealing with gastrointestinal issues. Highly recommend!
9
Digestion support
33 people found this helpful
After suffering from rotavirus, I started taking Boulardi sugaryomycetes, and they dramatically improved my digestion and bowel function within days. They are also invaluable when taking antibiotics and for maintaining intestinal health.
7.5
Bloating improvement
34 people found this helpful
Suffering from ulcerative colitis, I began using this product on my doctor's advice. After a few weeks, I experienced regular bowel movements, less cramping, and significantly reduced bloating. Overall, I feel better and even noticed smoother skin.
9
No bloating
5 people found this helpful
Excellent! I didn’t notice much difference initially; however, I appreciate its benefits. As a yeast probiotic, it survives antibiotics and my stomach felt fine without any bloating whilst using it.
7.5
Bloating reduction
48 people found this helpful
These probiotics are remarkable. They help restore intestinal microflora, reduce bloating, and improve my skin condition. I'm pleased with the results so far.
2
Worsened bloating
10 people found this helpful
I have leaky gut and took this Bacillus subtilis to help, but it made my bloating worse. I should have been more cautious with my choice.
9
Less bloating
10 people found this helpful
Fantastic probiotic yeast! Best paired with fibre. This works much better for me than regular CFU probiotics, which did nothing even after months. I noticed effects within a couple of days with two pills a day: reduced bloating, burping, improved stools, and significantly less stomach cramping and pain! Can't recommend enough for IBS sufferers and those with gut issues.
8
Probiotics significantly reduce bloating
We explored the effectiveness of the probiotic supplement Saccharomyces boulardii in reducing bloating and gastric pain among airline pilots suffering from chronic non-atrophic gastritis.

Over four weeks, participants were divided into groups receiving different doses of the probiotic or undergoing watchful waiting.

The results showed that both probiotic doses significantly improved symptoms compared to the control group, but only the high-dose led to notable changes in certain serum markers.

Overall, this suggests that Saccharomyces boulardii could help ease bloating and gastric discomfort in situations where these issues are common.
In this clinical trial, we evaluated the impact of Saccharomyces boulardii on patients with small intestinal bacterial overgrowth (SIBO) related to systemic sclerosis (SSc).

We examined the effects of S. boulardii alone, with metronidazole, or in combination for two months.

Results showed that both S. boulardii and the combination treatment significantly reduced gastrointestinal symptoms, including bloating, while metronidazole alone had limited success.

Overall, S. boulardii proves beneficial, giving hope to those suffering from related discomfort.
7
Saccharomyces boulardii reduces bloating effects
We evaluated the effects of the probiotic Saccharomyces boulardii on bloating in patients undergoing treatment for H. pylori infection. In a randomized controlled trial, 160 adults were divided into two groups: one received standard antibiotics along with Saccharomyces boulardii, while the other was treated with antibiotics alone.

Although the addition of the probiotic resulted in significantly fewer side effects, including bloating, it did not lead to a notable improvement in eradicating H. pylori. This suggests that while Saccharomyces boulardii may help with discomfort, it doesn't enhance the overall success of H. pylori treatment.
7
Yeast treatment shows mixed results
We investigated the effects of EpiCor fermentate on gastrointestinal discomfort and constipation, focusing on bloating. In a randomized double-blind trial, eighty participants tracked their symptoms over six weeks, comparing a yeast-based treatment to a placebo. While the results showed that EpiCor could positively influence gut microbiome composition and improve constipation symptoms, there was no significant direct benefit reported for bloating relief. So, while EpiCor can help with certain bowel issues, its effectiveness may not extend to all gastrointestinal discomforts.

References

  1. Li M, Xie Y. Efficacy and safety of as an adjuvant therapy for the eradication of : a meta-analysis. Front Cell Infect Microbiol. 2025;15:1441185. 10.3389/fcimb.2025.1441185
  2. Minoretti P, Liaño Riera M, Santiago Sáez A, Gómez Serrano M, García Martín Á. Probiotic Supplementation With Saccharomyces boulardii and Enterococcus faecium Improves Gastric Pain and Bloating in Airline Pilots With Chronic Non-atrophic Gastritis: An Open-Label Study. Cureus. 2024;16:e52502. 10.7759/cureus.52502
  3. García-Collinot G, Madrigal-Santillán EO, Martínez-Bencomo MA, Carranza-Muleiro RA, Jara LJ, et al. Effectiveness of Saccharomyces boulardii and Metronidazole for Small Intestinal Bacterial Overgrowth in Systemic Sclerosis. Dig Dis Sci. 2020;65:1134. 10.1007/s10620-019-05830-0
  4. Angelici MC, Nardis C, Scarpelli R, Ade P. Blastocystis hominis transmission by non-potable water: a case report in Italy. New Microbiol. 2018;41:173.
  5. Feng JR, Wang F, Qiu X, McFarland LV, Chen PF, et al. Efficacy and safety of probiotic-supplemented triple therapy for eradication of Helicobacter pylori in children: a systematic review and network meta-analysis. Eur J Clin Pharmacol. 2017;73:1199. 10.1007/s00228-017-2291-6
  6. Hayes SR, Vargas AJ. Probiotics for the Prevention of Pediatric Antibiotic-Associated Diarrhea. Explore (NY). 2016;12:463. 10.1016/j.explore.2016.08.015
  7. Goldenberg JZ, Lytvyn L, Steurich J, Parkin P, Mahant S, et al. Probiotics for the prevention of pediatric antibiotic-associated diarrhea. Cochrane Database Syst Rev. 2015. 10.1002/14651858.CD004827.pub4
  8. Zojaji H, Ghobakhlou M, Rajabalinia H, Ataei E, Jahani Sherafat S, et al. The efficacy and safety of adding the probiotic Saccharomyces boulardiito standard triple therapy for eradication of H.pylori: a randomized controlled trial. Gastroenterol Hepatol Bed Bench. 2013;6:S99.
  9. Polese B, Nicolai E, Genovese D, Verlezza V, La Sala CN, et al. Postprandial Gastrointestinal Function Differs after Acute Administration of Sourdough Compared with Brewer's Yeast Bakery Products in Healthy Adults. J Nutr. 2018;148:202. 10.1093/jn/nxx049
  10. Pinheiro I, Robinson L, Verhelst A, Marzorati M, Winkens B, et al. A yeast fermentate improves gastrointestinal discomfort and constipation by modulation of the gut microbiome: results from a randomized double-blind placebo-controlled pilot trial. BMC Complement Altern Med. 2017;17:441. 10.1186/s12906-017-1948-0
  11. Cayzeele-Decherf A, Pélerin F, Leuillet S, Douillard B, Housez B, et al. CNCM I-3856 in irritable bowel syndrome: An individual subject meta-analysis. World J Gastroenterol. 2017;23:336. 10.3748/wjg.v23.i2.336
  12. Spiller R, Pélerin F, Cayzeele Decherf A, Maudet C, Housez B, et al. Randomized double blind placebo-controlled trial of Saccharomyces cerevisiae CNCM I-3856 in irritable bowel syndrome: improvement in abdominal pain and bloating in those with predominant constipation. United European Gastroenterol J. 2016;4:353. 10.1177/2050640615602571
  13. Pineton de Chambrun G, Neut C, Chau A, Cazaubiel M, Pelerin F, et al. A randomized clinical trial of Saccharomyces cerevisiae versus placebo in the irritable bowel syndrome. Dig Liver Dis. 2015;47:119. 10.1016/j.dld.2014.11.007
  14. Moya D, Calsamiglia S, Ferret A, Blanch M, Fandiño JI, et al. Effects of dietary changes and yeast culture (Saccharomyces cerevisiae) on rumen microbial fermentation of Holstein heifers. J Anim Sci. 2009;87:2874. 10.2527/jas.2008-1446
  15. Treem WR, McAdams L, Stanford L, Kastoff G, Justinich C, et al. Sacrosidase therapy for congenital sucrase-isomaltase deficiency. J Pediatr Gastroenterol Nutr. 1999;28:137.
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