Lactobacillus rhamnosus

Uniquely adapted to survive in acidic and basic conditions within GI, this bacterium can also adhere to and colonize intestinal walls. Such characteristics give L. rhamnosus a better chance of survival so it may offer longer-term benefits. (1)

 L. rhamnosus protects against antibiotic-related diarrhea. Antibiotics can disrupt microbiota, which may result in digestive symptoms like diarrhea. (2)

 Some studies indicate that probiotic bacteria, including L. rhamnosus, may prevent UTIs by killing harmful bacteria and restoring vaginal flora.  

For instance, an analysis of 5 studies in 294 women found that several Lactobacillus bacteria, including L. rhamnosus, were safe and effective at preventing UTIs.

Other studies discovered that the L. rhamnosus given either orally or intravaginally was particularly effective at killing harmful bacteria in the urinary tract.

Animal studies show that several L. rhamnosus strains may improve insulin sensitivity and blood sugar control.

In a small study in 20 adults, taking an L. rhamnosus SP1 supplement helped reduce the appearance of acne.  

1. Survival of Probiotic Lactobacilli in Acidic Environments Is Enhanced in the Presence of Metabolizable Sugars. B. M. Corcoran,C. Stanton, G. F. Fitzgerald and R. P. Ross.

2. Effectiveness of Lactobacillus helveticus and Lactobacillus rhamnosus for the management of antibiotic-associated diarrhoea in healthy adults: a randomised, double-blind, placebo controlled trial Malkanthi Evans et al. Br J Nutr. 2016 Jul.