Lactobacillus gasseri is a naturally occurring lactic acid bacterium found in the human digestive and reproductive tracts, and it has drawn growing research interest for its diverse potential benefits. Studies indicate that certain strains may support vaginal health by helping maintain a balanced microbial environment, while other research suggests it could play a role in modulating immune responses and supporting the body's defenses against Helicobacter pylori when used alongside conventional approaches. L. gasseri has also been investigated in the context of weight management, with some clinical trials observing modest reductions in abdominal fat, though results vary and more large-scale studies are needed. Commonly available in probiotic capsule form, it remains an active and promising area of nutritional research for those exploring gut and whole-body wellness.
Compare this supplementResearch suggests that Lactobacillus gasseri may support immune function through several proposed mechanisms, includi...
View studies →Research suggests that Lactobacillus gasseri is one of several Lactobacillus species that naturally colonize the vagi...
View studies →The single study provided does not actually investigate Lactobacillus gasseri or H. pylori; it examines cross-reactiv...
View studies →Research suggests that certain strains of Lactobacillus gasseri may support weight management goals, with one 2018 re...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 1–5 billion CFU | Twice daily | H. pylori support | Used as adjunct to standard therapy in clinical trials; e.g. Francavilla et al. studies |
| Capsule | 1–10 billion CFU | Daily | Immune function | Typical range used in clinical trials assessing immune modulation |
| Capsule | 1 billion CFU | Daily | Vaginal health | Common in trials evaluating bacterial vaginosis and vaginal flora restoration |
| Capsule | 100–200 million CFU | Twice daily | Weight management | Common in RCTs studying visceral fat reduction, e.g. Kadooka et al. 2010 |
| Powder | 100–200 million CFU | Daily | Weight management | Fermented milk format studied by Kadooka et al. 2010 in Japanese cohorts |