Limosilactobacillus reuteri 3613-1 evaluated for its ability to delay onset, improve outcomes in women with a history of recurrent uncomplicated infections.
Ewing, NJ – March 31, 2026 – Microorganisms, the scientific, peer-reviewed, open-access journal of microbiology, has published “Limosilactobacillus reuteri 3613-1 Delays Onset of Unconfirmed Urinary Tract Infections in Otherwise Healthy Women,” an article highlighting the effectiveness of the Limosilactobacillus reuteri 3613-1 strain of probiotics, identified by and available through Evolved Probiotics™, by the ARM & HAMMER™ brand.
Managed by Atlantia Clinical Trials, the randomized, double-blind, placebo-controlled pilot study assessed the effects of six-month supplementation with L. reuteri 3613-1 on the recurrence of uncomplicated symptomatic urinary tract infections (UTIs) in 130 women aged 18-65. The findings showed L. reuteri 3613-1 delayed the onset of the first UTI, achieving statistical significance in participants with suspected but unconfirmed UTIs as well as confirmed reuterin production. Previous in vitro work demonstrated that the antimicrobial properties of the strain inhibited the growth of Escherichia coli isolates and demonstrated superior inhibition of Gardnerella vaginalis and Candida albicans when compared with other L. reuteri strains.
L. reuteri 3613-1 was identified from a library of over 6,000 lactic acid bacteria in the ARM & HAMMER™ brand research library as unique due to its ability to produce antimicrobial metabolites. Designed to naturally transform in the body, the strain produces reuterin, a potent antimicrobial compound that inhibits vaginal and urinary pathogens up to 90% more effectively than other strains. It can be applied across key delivery formats, with seamless integration into powder mixes, cultured products, and capsules.
“While urinary tract infections are unfortunately common and recurring among women of reproductive age, we continue to see probiotics as an effective strategy in promoting urogenital wellness,” said Amy Wescott, Operations Manager at ARM & HAMMER™ Performance Products and co-author of the published article. “Rooted in the trust and legacy of the ARM & HAMMER™ brand, Evolved Probiotics™ is at the forefront of probiotic innovation, addressing the needs of today’s sophisticated consumer who seeks reliable alternative health strategies.”
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ARM & HAMMER™ Performance Products is part of Church & Dwight’s Specialty Products Division, the B2B engine behind its legendary bicarbonate products and beyond.
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