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Home Learn Learn About Lactobacillus Bulgaricus & Lactobacillus Plantarum in 5 Minutes


Learn About Lactobacillus Bulgaricus & Lactobacillus Plantarum in 5 Minutes

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What are Lactobacillus bulgaricus & Lactobacillus plantarum?

L. bulgaricus and L. plantarum are probiotics that are believed to have digestive benefits. So far, over 200 different beneficial bacteria have been discovered within the Lactobacillus genus, but L. bulgaricus and L. plantarum appear to be two of the most beneficial strains. Evidence suggests that probiotics may be beneficial for digestion, and it appears that L. bulgaricus and L. plantarum may also help with a wide range of other conditions and ailments.

Are Lactobacillus bulgaricus & Lactobacillus plantarum water-soluble or fat-soluble?

Lactobacilli and other probiotics are neither fat-soluble nor water-soluble. Instead, they pass through your body using a mechanism called cell suspension. This mechanism provides lactobacilli with bioavailability that’s roughly equal to that of water-soluble substances.

Where can L. bulgaricus & L. plantarum be found naturally? Common sources of L. bulgaricus & L. plantarum:

These probiotics are abundant in almost all fermented foods. Yoghurt, cheese, and other fermented dairy products are off the menu for vegans, however, and non-dairy food sources of probiotics are often inconvenient or unappetising.

What is the recommended daily value for Lactobacillus bulgaricus & Lactobacillus plantarum?

These probiotics are not recognised as essential nutrients, so there is no nutrient reference value (NRV) for L. bulgaricus or L. plantarum. Average doses used in clinical research vary between 1 billion and 10 billion colony-forming units (CFU) per day.

Can you absorb enough Lactobacillus bulgaricus & Lactobacillus plantarum from food?

The only way to get enough L. bulgaricus and L. plantarum in your diet is to eat lots of fermented foods. Vegans can't eat fermented dairy, and there are plenty of reasons why you may dislike other fermented foods. Taking probiotics in a daily supplement, therefore, is the most convenient way to ingest L. bulgaricus and L. plantarum.

Why are Lactobacillus bulgaricus & Lactobacillus plantarum necessary for your body?

Your digestive tract contains trillions of probiotic bacteria. Your body needs these beneficial bacteria to process food and extract nutrients. Probiotics, therefore, appear to be beneficial no matter what your health condition may be, but the potential benefits these substances provide become even more profound after you’ve taken antibiotics, which wipe out all the beneficial bacteria in your gut.

Functions of Lactobacillus bulgaricus & Lactobacillus plantarum

  • Might provide digestive benefits: Evidence suggests that L. plantarum and L. bulgaricus provide overall digestive benefits, and research also indicates that these probiotics may be useful for irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and constipation.
  • Might provide cardiovascular benefits: Limited evidence suggests that lactobacilli may reduce blood pressure, reduce levels of bad cholesterol, and reduce cardiovascular risk factors in postmenopausal women.
  • Might provide skin benefits: Research indicates that individuals with eczema may experience positive results after using L. bulgaricus and L. plantarum. Since eczema appears to be an autoimmune disorder, this evidence suggests that lactobacilli could also benefit your immune system more generally.

L. bulgaricus and plantarum are thought to have great benefits for skin health, which is why we've included 4B CFU L. bulgaricus and 4B CFU L. plantarum in Feel Beauty Probiotic+.

  • Other potential benefits: Certain evidence suggests that lactobacilli could reduce the negative side effects of administering oral antibiotics, and probiotics may also help with hay fever, tooth decay, liver disease and even the common cold.

When should you take Lactobacillus bulgaricus & Lactobacillus plantarum?

It is almost always a good idea to take probiotics after you have ingested oral antibiotics. Since antibiotics strip your digestive system of beneficial bacteria, lactobacilli can help replenish your gut flora. Evidence also suggests that L. bulgaricus and L. plantarum could be useful for improving digestion for people of all ages and backgrounds.

How long do you need to take Lactobacillus bulgaricus & Lactobacillus plantarum to start experiencing their benefits?

Probiotics absorb into your digestive system very rapidly, but their effects are subtle. Unless your gut flora has recently been depleted by antibiotics, it may take a few weeks of continued dosing to note the effects of probiotics.

Consistency is key and our research recommends taking your Feel supplements for at least 3 months to allow your body to adjust and provide you with the desired benefits. 

How long does it take for your body to digest/absorb Lactobacillus bulgaricus & Lactobacillus plantarum?

Since they engage in cell suspension within the body, L. bulgaricus and L. plantarum absorb into your digestive tract almost immediately.

How long do Lactobacillus bulgaricus & Lactobacillus plantarum stay in your body after you take them?

Once inside your body, L. bulgaricus and L. plantarum begin dividing and creating colonies of healthy gut flora. While bacteria in your gut are constantly dying and being excreted, the continually regenerated colonies created by the probiotics you ingest should last indefinitely.

Are Lactobacillus bulgaricus & Lactobacillus plantarum antioxidants?

Evidence suggests that probiotics might exert antioxidant activity in the body.

Can you overdose on Lactobacillus bulgaricus & Lactobacillus plantarum? What are the effects?

Ingesting excessive quantities of probiotics may cause mild digestive discomfort. Additionally, probiotics should not be taken by immunocompromised individuals.

Do Lactobacillus bulgaricus & Lactobacillus plantarum dissolve, flush out, or build up in the body?

Probiotics like L. bulgaricus and L. plantarum generate colonies of beneficial bacteria that remain in the gut.

Can you take Lactobacillus bulgaricus & Lactobacillus plantarum during a diet?

L. bulgaricus and L. plantarum are vegan and gluten-free, and they promote proper calorie usage by making digestion more efficient.

Are there synthetic forms of L. bulgaricus & L. plantarum?

Probiotic bacteria themselves cannot be synthesised, but efforts are underway to use synthetic biology to develop new strains of probiotics.

Absorption rate of synthetic Lactobacillus bulgaricus & Lactobacillus plantarum

Ideally, probiotics generated with synthetic biology would have improved bioavailability.

Why might natural forms of Lactobacillus bulgaricus & Lactobacillus plantarum be better?

Probiotic bacteria are incredibly delicate organisms. It’s possible that tinkering with probiotic biology could result in unintended negative consequences.

How to take Lactobacillus bulgaricus & Lactobacillus plantarum

You can ingest L. bulgaricus and L. plantarum by eating fermented foods or taking these probiotics in supplement form.

Lactobacillus bulgaricus & Lactobacillus plantarum trends in medicine

In 2020, a scientific review was released detailing ongoing efforts to use gene-editing tools like CRISPR to develop new strains of probiotics. The goal of this research is to make probiotics more effective and more efficient, but it’s too soon to say whether genetically engineered probiotics will be beneficial or harmful. Also this year, a Korean study found that L. plantarum was an effective treatment for colitis.


1. Systematic Review of Randomized Controlled Trials of Probiotics, Prebiotics, and Synbiotics in Inflammatory Bowel Disease

2. Clinical trial: Lactobacillus plantarum 299v (DSM 9843) improves symptoms of irritable bowel syndrome

3. Effect of Probiotics on Blood Pressure

4. Beneficial effects of Lactobacillus plantarum on glycemia and homocysteine levels in postmenopausal women with metabolic syndrome

5. A randomized trial of Lactobacillus plantarum CJLP 133 for the treatment of atopic dermatitis

6. Probiotics for the Prevention and Treatment of Antibiotic-Associated Diarrhea: A Systematic Review and Meta-Analysis

7. Probiotics as Potential Antioxidants: A Systematic Review

8. Efficient Engineered Probiotics Using Synthetic Biology Approaches: A Review

9. Lactobacillus plantarum CBT LP3 ameliorates colitis via modulating T cells in mice

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About the author
Katie Hipwell - Katie is an AfN Registered Nutritionist (RNutr) with a specialism in food and is Head of Nutrition at Feel. Katie has worked in the food supplement industry for 10 years. She has completed a Master's degree in Human Nutrition and an undergraduate degree in BSc Sport and Exercise Nutrition.
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