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Lactobacillus Rhamnosus vs. Lactobacillus Reuteri: What's the Difference?

Edited by Aimie Carlson || By Janet White || Published on February 22, 2024
Lactobacillus rhamnosus is known for gut health and immunity support, while Lactobacillus reuteri benefits oral and female health.

Key Differences

Lactobacillus rhamnosus is a type of probiotic bacteria widely recognized for its benefits in gastrointestinal health and boosting the immune system. In contrast, Lactobacillus reuteri is known for its role in improving oral health and maintaining the balance of bacteria in the female reproductive system. Both play significant roles in human health, but with distinct focuses.
Research on Lactobacillus rhamnosus has shown its efficacy in treating diarrhea, especially in children, and in preventing antibiotic-associated diarrhea. Meanwhile, Lactobacillus reuteri has been studied for its ability to combat tooth decay, improve oral hygiene, and support the health of the female urinary tract. These specific applications highlight the different areas where each bacterium is most effective.
Lactobacillus rhamnosus is often found in the human intestine and is a popular choice in dietary supplements and fermented foods for gut health. Lactobacillus reuteri, on the other hand, naturally inhabits the gut, mouth, and breast milk, and is used in products targeting oral health and for the health benefits in women and infants.
The strain Lactobacillus rhamnosus GG, in particular, is one of the most extensively studied probiotic strains, with a well-established safety profile and a range of health benefits. Lactobacillus reuteri, with strains like L. reuteri DSM 17938, is researched for its unique ability to produce reuterin, a compound with antimicrobial properties.
Both Lactobacillus rhamnosus and Lactobacillus reuteri are considered safe and beneficial for most people. However, their effectiveness can vary based on individual health conditions, the strains used, and the method of consumption. It’s always recommended to consult healthcare professionals when considering probiotic supplements.

Comparison Chart

Primary Health Benefits

Gut health, immune support
Oral health, female reproductive system balance

Common Usage

Treating and preventing diarrhea
Combatting tooth decay, improving female health

Natural Habitat

Human intestine
Gut, mouth, breast milk

Notable Strains

Lactobacillus rhamnosus GG
Lactobacillus reuteri DSM 17938

Unique Properties

Widespread use in gastrointestinal health
Produces reuterin with antimicrobial properties

Lactobacillus Rhamnosus and Lactobacillus Reuteri Definitions

Lactobacillus Rhamnosus

Used in treating and preventing various types of diarrhea.
Lactobacillus rhamnosus is effective in managing antibiotic-associated diarrhea.

Lactobacillus Reuteri

Used in products targeting dental health and women's health.
She used a dental rinse containing Lactobacillus reuteri for better oral care.

Lactobacillus Rhamnosus

A probiotic bacterium beneficial for gastrointestinal health.
Lactobacillus rhamnosus supplements are recommended for improving digestive health.

Lactobacillus Reuteri

Produces reuterin, an antimicrobial substance.
The antimicrobial properties of Lactobacillus reuteri help in reducing gut infections.

Lactobacillus Rhamnosus

Known for supporting the immune system.
To boost her immunity, she added Lactobacillus rhamnosus to her diet.

Lactobacillus Reuteri

Beneficial in managing female urinary tract health.
Supplements with Lactobacillus reuteri are recommended for urinary tract health in women.

Lactobacillus Rhamnosus

Often consumed through supplements and fermented foods.
He included Lactobacillus rhamnosus in his diet through probiotic supplements.

Lactobacillus Reuteri

Found in the human gut, mouth, and breast milk.
Lactobacillus reuteri is naturally present in breast milk, aiding infant health.

Lactobacillus Rhamnosus

Commonly found in the human intestine and dairy products.
Yogurts containing Lactobacillus rhamnosus can aid in maintaining gut health.

Lactobacillus Reuteri

A probiotic known for its benefits in oral and female health.
Lactobacillus reuteri lozenges are used to improve oral hygiene.


Can Lactobacillus rhamnosus prevent diarrhea?

Yes, it's effective in preventing and treating various types of diarrhea.

Where is Lactobacillus rhamnosus commonly found?

In the human intestine and in certain dairy products.

Can Lactobacillus reuteri improve women's health?

Yes, it's beneficial for the female reproductive system and urinary tract health.

How do you consume Lactobacillus rhamnosus?

Through supplements, fermented foods, and dairy products.

What is Lactobacillus rhamnosus?

A probiotic bacterium beneficial for gastrointestinal health and immune support.

Is Lactobacillus reuteri safe for infants?

Yes, it's naturally present in breast milk and considered safe for infants.

What are the most notable strains of Lactobacillus rhamnosus?

Lactobacillus rhamnosus GG is one of the most extensively studied strains.

How does Lactobacillus reuteri benefit oral health?

It combats tooth decay and improves oral hygiene through its antimicrobial properties.

What makes Lactobacillus reuteri unique?

Its ability to produce reuterin, an antimicrobial substance.

How does Lactobacillus reuteri affect gut health?

It contributes to a healthy gut microbiome and has antimicrobial effects.

Can Lactobacillus rhamnosus treat antibiotic-associated diarrhea?

Yes, it's effective in managing this condition.

Does Lactobacillus rhamnosus help with lactose intolerance?

It may aid in digestion, but its effectiveness on lactose intolerance varies.

What are the main benefits of Lactobacillus reuteri?

Improving oral health, female health, and producing antimicrobial substances.

Can Lactobacillus rhamnosus aid in nutrient absorption?

Yes, it can help in better absorption of nutrients in the gut.

What is the role of Lactobacillus reuteri in infant health?

It aids in digestive health and immunity in infants.

Can Lactobacillus reuteri be used in dental care products?

Yes, it's used in products for oral hygiene and dental health.

Is Lactobacillus rhamnosus helpful for the immune system?

Yes, it supports the immune system.

Where can you find Lactobacillus reuteri naturally?

In the human gut, mouth, and breast milk.

Are there any side effects of Lactobacillus rhamnosus?

It's generally safe, but individuals with certain health conditions should consult a doctor.

Is Lactobacillus reuteri beneficial for men's health as well?

While studied mainly for women's health, it can also benefit men's gut and oral health.
About Author
Written by
Janet White
Janet White has been an esteemed writer and blogger for Difference Wiki. Holding a Master's degree in Science and Medical Journalism from the prestigious Boston University, she has consistently demonstrated her expertise and passion for her field. When she's not immersed in her work, Janet relishes her time exercising, delving into a good book, and cherishing moments with friends and family.
Edited by
Aimie Carlson
Aimie Carlson, holding a master's degree in English literature, is a fervent English language enthusiast. She lends her writing talents to Difference Wiki, a prominent website that specializes in comparisons, offering readers insightful analyses that both captivate and inform.

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