B. coagulans is a promising probiotic that can lower insulin levels, improve cholesterol, IBS, and arthritis. This bacterium was recently shown to stimulate muscle recovery in athletes.
Bacillus coagulans is a Gram-positive, spore-forming bacterium which is considered safe or beneficial as a food additive. It can also produce lactic acid and is therefore sometimes misclassified as Lactobacillus sporogenes [1, 2].
B. coagulans probiotics have not been approved by the FDA for medical use and generally lack solid clinical research. Regulations set manufacturing standards for them but don’t guarantee that they’re safe or effective. Speak with your doctor before supplementing.
In multiple clinical trials, B. coagulans decreased bloating, vomiting, diarrhea, abdominal pain and stool frequency and increased the quality of life in patients with diarrhea-predominant irritable bowel syndrome (IBS) [3, 4, 5, 6].
A combination of simethicone and B. coagulans reduced bloating and discomfort in patients with IBS .
B. coagulans elevates beneficial bacteria (Faecalibacterium prausnitzii, Clostridium lituseburense, Bacillus spp. and Eubacterium rectale) levels in volunteers. This, in turn, results in elevated concentrations of butyrate, acetate, and propionate .
Daily consumption of B. coagulans in elderly increased populations of beneficial bacteria and anti-inflammatory cytokines .
B. coagulans spores beneficially modulate GI microbiota, by increasing lactic acid bacteria (LAB) and decreasing Enterobacteriaceae in rats .
B. coagulans decreased coliform counts and increased both Lactobacilli and Bacillus spore counts in rats .
B. coagulans + fructooligosaccharide (FOS) decreased abdominal pain duration and frequency in children with GI disorders .
B. coagulans synbiotic seems to be effective in the treatment of childhood functional abdominal pain .
B. coagulans significantly improved abdominal pain and the quality of life in adults with postprandial intestinal gas-related symptoms and no GI diagnoses .
B. coagulans symbiotic effectively improved bowel movements and fecal properties in functionally constipated persons .
Similarly, consumption of the synbiotic bread with B. coagulans improved NO and MDA levels in T2D patients .
B. coagulans, inulin and beta-carotene coadministration decreased insulin, HOMA-IR, HOMA-B, triglycerides, VLDL-cholesterol levels, and total-/HDL-cholesterol ratio. This treatment also elevated plasma nitric oxide (NO) and glutathione (GSH) .
Researchers are currently investigating whether B. coagulans has other health benefits. The potential benefits in this section have produced positive results in at least one clinical trial, but these studies are small, contradictory, or otherwise limited. Talk to your doctor before supplementing with B. coagulans for any reason.
In a small clinical study, B. coagulans in combination with protein reduced muscle damage and soreness, improved recovery and maintained physical performance in athletes after strenuous exercise .
In the same study, B. coagulans enhanced protein absorption, a potential mechanism for indirectly improving recovery and training adaptations .
Increase in vertical jump power was noted following 8 weeks of full body workouts 4-times per week daily while ingesting B. coagulans .
Adjunctive treatment with B. coagulans was safe and effective for patients suffering from rheumatoid arthritis. B. coagulans improved pain, improved self-assessed disability, reduced CRP levels, and improved the ability to walk 2 miles, reach, and participate in daily activities .
Preterm infants supplemented with B. coagulans had improved feeding tolerance .
B. coagulans reduced vaginosis symptoms in women when co-administered with antibiotics .
No clinical evidence supports the use of B. coagulans for any of the conditions listed in this section. Below is a summary of the existing animal and cell-based research, which should guide further investigational efforts. However, the studies listed below should not be interpreted as supportive of any health benefit.
B. coagulans metabolites stimulate the maturation of antigen-presenting cells  and increase T-cell production of TNF-alpha in response to adenovirus exposure and influenza A exposure in healthy adults .
B. coagulans ameliorates parasite infection, hepatic and intestinal damage, in Schistosoma mansoni infected mice .
B. coagulans is considered safe for chronic human consumption. Probiotics, in general, are considered safe but should be avoided in patients with organ failure, immunocompromised status, and dysfunctional gut barrier mechanisms [37, 1].