Lactobacillus reuteri
Probiotic
Also known as: L. reuteri
B
Grade B💊 100 million - 10 billion CFU🎯 4 primary uses🔗 1 synergy⚠️ Review warnings
Overview
Unique probiotic producing reuterin antimicrobial compound. Studied for oral health, colic, and gut-brain effects.
Primary Uses
Oral healthInfant colicH. pyloriGut-brain axis
Dosage
Typical range
100 million - 10 billion CFU
Timing
Varies by strain
With food
Either way
Duration
Safe long-term
Special Populations
Infants (colic), oral health
Mechanism of Action
- • Produces reuterin antimicrobial
- • Supports oral microbiome
- • Gut-brain axis effects
Evidence Quality
Evidence Grade B
Unique antimicrobial production
Safety & Contraindications
Serious Warnings
- • Standard cautions
Contraindications
- • Severe immunocompromise
Common Side Effects
- • Minimal
Pregnancy & Breastfeeding
Consult healthcare provider
Liver & Kidney Notes
Safe
Interactions
💊 Medications
- • Standard probiotic
🧪 Supplements
- • Works with other probiotics
🍽️ Food & Alcohol
- • No interactions
Stacking & Synergies
Pairs Well With
Vitamin D (some strains studied together)
Avoid Combining With
None
Best Goal Synergies
Oral healthInfant colic
Buying Guide
What to Look For
- • Strain matches intended use
Standardization Markers
CFU countSpecific strain
Adulteration risk
Low
Practical Notes
- • Different strains for different purposes
- • DSM 17938 for colic
Tags
probioticoral healthgut-brain
Frequently Asked About Lactobacillus reuteri
How much Lactobacillus reuteri should I take?
The typical effective range is 100 million - 10 billion CFU. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.
When is the best time to take Lactobacillus reuteri?
Varies by strain. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.
Should I take Lactobacillus reuteri with food?
Either way.
Does Lactobacillus reuteri interact with medications?
Yes — known interactions include Standard probiotic. If you take any prescription medication, talk to your doctor or pharmacist before starting Lactobacillus reuteri.
What does Lactobacillus reuteri pair well with?
Lactobacillus reuteri stacks well with Vitamin D (some strains studied together) — these combinations either improve absorption or work synergistically toward common goals.
Who should not take Lactobacillus reuteri?
Lactobacillus reuteri should be avoided or used with caution by people with Severe immunocompromise. Pregnant or breastfeeding women should consult a healthcare provider before use.
What are the side effects of Lactobacillus reuteri?
Most people tolerate Lactobacillus reuteri well. The most commonly reported side effects are Minimal. Side effects are usually dose-dependent — lowering the dose often resolves them.
Related Guides
In-depth guides covering Lactobacillus reuteri — protocols, comparisons, and use cases.
Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.