L. reuteri
A versatile probiotic strain for gut health, immunity, and more.
Also known as: Lactobacillus reuteri
Overview
Lactobacillus reuteri is a well-researched strain of probiotic bacteria that naturally inhabits the gut of humans and other animals. It is known for producing a unique antimicrobial compound called reuterin, which helps it to combat pathogens. L. reuteri has been studied for a wide range of benefits, including improving digestive health, supporting the immune system, and even promoting oral and skin health.
Key Benefits
Inhibits Harmful Bacteria
L. reuteri produces reuterin and other antimicrobial substances that can inhibit the growth of harmful bacteria, yeasts, and fungi in the gut.
Supports a Healthy Immune Response
It can modulate the immune system, helping to promote a balanced inflammatory response.
Improves Oral Health
Certain strains of L. reuteri have been shown to reduce the bacteria that cause tooth decay and gum disease.
Reduces Colic in Infants
Specific strains of L. reuteri are one of the most effective probiotic treatments for reducing crying time in colicky, breastfed infants.
Dosage & How to Take
Probiotic dosage is measured in Colony Forming Units (CFUs). For L. reuteri, a typical daily dose is between 1 and 10 billion CFUs.
| Purpose | Dose | Notes |
|---|---|---|
| General Gut Health | 1-5 Billion CFU/day | |
| Infant Colic | 100 Million CFU/day (specific strains) | Consult a pediatrician. |
| Oral Health | 200 Million CFU/day (specific strains) | Often in lozenge form. |
Best Time to Take
Can be taken at any time of day, but consistency is key.
With or Without Food
Some evidence suggests taking probiotics with or just before a meal that contains some fat can improve their survival.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Capsules | High | General use | Enteric-coated capsules help protect the bacteria from stomach acid. |
| Chewable Tablets/Lozenges | High | Oral health | Allows the bacteria to colonize the oral cavity. |
| Powder | High | Infants and children | Can be mixed into cool food or drinks. |
Side Effects & Safety
Common
- Mild gas or bloating may occur initially.
Rare
- None known in healthy individuals.
Contraindications
- Severely immunocompromised individuals should consult a doctor before taking probiotics.
Interactions
Antibiotics can kill probiotic bacteria. It is recommended to take probiotics at least 2-3 hours apart from antibiotics.
Scientific Research
Lactobacillus reuteri: an effective probiotic for infantile colic
A specific strain of L. reuteri was shown to be highly effective in reducing crying time in breastfed infants with colic.
Effect of Lactobacillus reuteri on the Bifidobacterium and Bacteroides population in human intestine
L. reuteri supplementation was found to positively modulate the gut microbiota.
Food Sources
Products With L. reuteri
6 products in our database contain this ingredient
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.