Lactobacillus Bulgaricus Probiotic Information

L. Bulgaricus is one of the first probiotic strains ever studied. The Russian Nobel Prize winner, Ilya Mechnikov, first isolated Lactobacillus Bulgaricus around 1882 when he discovered the probiotic’s role in beneficial digestion.

Ilya Mechnikov found L. Bulgaricus in fermented sour milk. He attributed the longevity of the Balkans people to their consumption of sour milk, fermented foods and the L. Bulgaricus probiotic that was in these foods.

In the 1960’s and 1970’s there was extensive research on this probiotic by Russian researchers such as Dr. Ivan Bogdanov. Here is a full list of the benefits:

Researched Lactobacillus Bulgaricus Benefits

  • decrease triglycerides, LDL levels, total cholesterol
  • increase immunity and fight viruses
  • decrease leaky gut symptoms
  • decrease diarrhea & nausea
  • improve dairy digestion
  • decrease inflammation
  • improve IBS symptoms
  • decrease tooth decay
  • manage HIV symptoms
  • decrease leaky gut
  • fight dyspepsia

L. Bulgaricus Side Effects

Here is an article on probiotics side effects.


Jain PK, McNaught CE, Anderson AD, MacFie J, Mitchell CJ. Influence of synbiotic containing Lactobacillus acidophilus La5, Bifidobacterium lactis Bb 12, Streptococcus thermophilus, Lactobacillus bulgaricus and oligofructose on gut barrier function and sepsis in critically ill patients: a randomised controlled trial. Clin Nutr. 2004 Aug;23(4):467-75.

Mater DD, Bretigny L, Firmesse O, Flores MJ, Mogenet A, Bresson JL, Corthier G. Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus survive gastrointestinal transit of healthy volunteers consuming yogurt. FEMS Microbiol Lett. 2005 Sep 15;250(2):185-7.

Dimitonova SP, Danova ST, Serkedjieva JP, Bakalov BV. Antimicrobial activity and protective properties of vaginal lactobacilli from healthy Bulgarian women. Anaerobe. 2007 Oct-Dec;13(5-6):178-84.

Kano H, Mogami O, Uchida M. Oral administration of milk fermented with Lactobacillus delbrueckii ssp. bulgaricus OLL1073R-1 to DBA/1 mice inhibits secretion of proinflammatory cytokines. Cytotechnology. 2002 Nov;40(1-3):67-73.

4 comments on “L. bulgaricus Probiotic Benefits & Side Effects” - Click here to write your comment

  1. Mikhail Vulkov says:

    Here is the first scientific publication for LB bulgaricus. Dr Stamen Grigorov is a Bulgarian scientist.

    Grigoroff, Stamen. Étude sur une lait fermenté comestible. Le “Kissélo mléko” de Bulgarie. // Revue Médicale de la Suisse Romande. 1905.

  2. Nancy Reil-Riojas says:

    Thank you so much. Since L. Bulgaricus was discovered in the 1880s and extensive research was done in the 1960s, why then do our U.S.A. doctors today not mention the products that contain the wonders of this bacteria to their patients? Why then do our doctors act is if they know nothing about this wonder? I have asked them concerning similar issues, and their answer is “I am not trained in that.” We patients are ten left out in the cold with illnesses that our doctors could help us cure, but they choose to remain silent because why should they cure the patient and lose that income. So much for the original Hippocratic Oath. Nancy Reil Riojas, Jan. 26, 2022.

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