Lactobacillus reuteri
Lactobacillus reuteri is a probiotic strain that supports vaginal health, bone mineral density in post-menopausal women, testosterone levels in men, and reduces infant colic.
Evidence last reviewed: 20 Apr 2026
The evidence for Lactobacillus reuteri is moderate, showing effectiveness in reducing infant colic, improving vaginal microbiota, and aiding in Helicobacter pylori treatment. While the benefits are promising, more extensive research could further validate these findings.
Infant colic reductionInfants with colic · Systematic reviewModerate
Probiotics, including Lactobacillus reuteri, resulted in a significant reduction in crying time for infants with colic.
Vaginal microbiota improvementPregnant women · RCTModerate
Lactobacillus reuteri RC-14 improved vaginal microbiota and cytokine profiles in pregnant women.
Reduction in Helicobacter pylori infectionAdults with Helicobacter pylori infection · RCTModerate
Lactobacillus reuteri DSM 17648 was effective as an adjunct treatment for reducing Helicobacter pylori infection.
Forms & usage▾
Take as directed on the product label, typically once daily.