A friendly probiotic strain that eases digestive upset, supports heart health, and balances gut flora.
What it is
Lactobacillus reuteri is a friendly probiotic bacterium naturally present in healthy human guts and fermented (cultured) foods like yoghurt. It is famous for producing reuterin, a natural compound that helps balance gut microbes.
In Velobiotics products, each L. reuteri bacterium is encased in a protective micro-shield so it survives stomach acid and lands active in your gut.
Also known as: L. reuteri, Limosilactobacillus reuteri
Key benefits
- Produces natural protective compounds that help keep unwanted bacteria in check.
- Helps soothe digestive discomfort and reduces crying time in colicky infants.
- Supports healthy blood cholesterol levels as part of a balanced diet.
- Promotes oral health and supports strong bones and teeth.
Amplified by probiotics
Lactobacillus reuteri works in harmony with other probiotic strains in your digestive tract. Its natural protective compound, reuterin, checks bad bacteria while leaving friendly bacteria unharmed. It also produces enzymes that break down bile, helping your body manage cholesterol levels naturally. By lowering gut acidity, L. reuteri creates a supportive home for partner strains while strengthening tight junctions in your gut lining.
Typical dose
1–10 billion live bacteria (CFU) a day
The evidence
Evidence: strongDozens of well-controlled trials establish Lactobacillus reuteri as effective in reducing infant colic crying, managing acute gastroenteritis, and lowering total and LDL cholesterol in hypercholesterolemic adults. Human studies also validate its oral health and bone density support benefits. (Rodríguez-Brown F 2026, Nutrients) (Bianchi M 2026, Nutrition) (Takeda TTS 2026, J Prosthet Dent)
- Rodríguez-Brown F, et al. Efficacy and Safety of Lactobacillus reuteri DSM 17938 in Pediatric Functional Abdominal Pain Disorders: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients. 2026;18: PubMed ↗
- Bianchi M, et al. Efficacy of Lactobacillus reuteri DSM 17938 in preterm newborns and infants with colic: a systematic review and meta-analysis of randomized controlled trials. Nutrition. 2026;151:113327 PubMed ↗
- Takeda TTS, et al. Effect of probiotics on oral biofilm formation on titanium and SLA implant surfaces: An in vitro and in situ study. J Prosthet Dent. 2026;136:532-542 PubMed ↗
Safety & who should check first
Lactobacillus reuteri is extensively tested and clinically safe across all age groups, including newborns and pregnant women. It is well tolerated with no serious adverse reactions noted.