Probiotic

Lactobacillus bulgaricus

Lactobacillus bulgaricus is formally classified as Lactobacillus delbrueckii subsp. bulgaricus. It is a traditional yoghurt starter culture that produces lactic acid and the enzyme beta-galactosidase.

It contributes fermentation diversity and bacterial lactose-processing activity to a multi-strain probiotic blend.

In everyday life, Lactobacillus bulgaricus contributes lactic-acid fermentation and lactose-processing activity to a more diverse, thoughtfully balanced digestive formula.

Probiotic benefits are strain-specific. Verified strain identity, viable CFU and storage conditions are important quality considerations.

Available in

2 products

Ingredient overview

What it is

Lactobacillus bulgaricus is formally classified as Lactobacillus delbrueckii subspecies bulgaricus. It is a traditional yoghurt starter culture that produces lactic acid and the enzyme beta-galactosidase.

  • Scientific identity: Lactobacillus bulgaricus; scientific identity: Lactobacillus delbrueckii subspecies bulgaricus.
  • How it works: Lactose is split: Lactose is broken into glucose and galactose, the two simple sugars the small intestine is able to absorb directly. Passes through, does not settle: It is transient rather than colonising, and is cleared within days, which is why the contribution depends on continued daily intake.
  • Primary function: It contributes fermentation diversity and bacterial lactose-processing activity to a multi-strain probiotic blend.
  • What it supports: Lactobacillus bulgaricus contributes lactic-acid fermentation and lactose-processing activity to a more diverse, thoughtfully balanced digestive formula.
  • Important consideration: Effects depend on the exact bacterial strain, viable colony-forming units and appropriate storage conditions throughout shelf life.

Formulation rationale

Why we use it

CARPEDIEM selected Lactobacillus bulgaricus for a clearly defined role within a thoughtfully balanced formulation.

  • Formulation purpose: It contributes fermentation diversity and bacterial lactose-processing activity to a multi-strain probiotic blend.
  • Used in: CARPEDIEM HappyGut 70B Probiotic and CARPEDIEM HappyGut 140B Probiotic.
  • Works alongside: Lactobacillus bulgaricus complements Bifidobacterium breve, Lactobacillus acidophilus and Bacillus coagulans to support everyday digestive wellness and complementary probiotic activity.
  • Meaningful contribution: Lactobacillus bulgaricus contributes lactic-acid fermentation and lactose-processing activity to a more diverse, thoughtfully balanced digestive formula. Contributes bacterial beta-galactosidase, an enzyme involved in lactose processing.
  • Quality and scientific context: Effects depend on the exact bacterial strain, viable colony-forming units and appropriate storage conditions throughout shelf life. Research is shown only when an ingredient-specific study demonstrates a relevant benefit.

Ingredient intelligence

How it works

How this yoghurt culture helps break down milk sugar, step by step.

Step 01 / 04

Arrives alive.

Freeze-dried cells rehydrate in the digestive tract. Some are lost to stomach acid, so the count on the label is set to allow for that.

01 / 04

Taxonomy

Lactobacillus delbrueckii subsp. bulgaricus

Key enzyme

Beta-galactosidase (lactase)

Fermentation

Homofermentative - lactic acid only

Gut behaviour

Transient - does not settle

Descriptive of the ingredient's established biology. Not a claim to diagnose, treat, cure or prevent any disease.

All key functions

The complete functional profile connected with this ingredient.

Adds a traditional yoghurt-associated culture to a balanced probiotic formulation.

Produces lactic acid through the fermentation of suitable dietary carbohydrates.

Contributes bacterial beta-galactosidase, an enzyme involved in lactose processing.

Supports digestive-wellness nutrition through a distinct fermented-dairy-associated species.

Complements other probiotic bacteria with a different fermentation background.

Adds live-culture diversity to a comprehensive daily gut-support routine.

Contributes lactic-acid fermentation and lactose-processing activity to a more diverse, thoughtfully balanced digestive formula.

Works alongside Bifidobacterium breve and Lactobacillus acidophilus to create a more complete, complementary probiotic blend.

Selected research

Open the original paper, PubMed record or DOI page for the full publication.

Products containing Lactobacillus bulgaricus

Explore the Carpediem formulations connected with this ingredient.

Complementary by function

Ingredient intelligence

How it works

How this yoghurt culture helps break down milk sugar, step by step.

Step 01 / 04

Arrives alive.

Freeze-dried cells rehydrate in the digestive tract. Some are lost to stomach acid, so the count on the label is set to allow for that.

01 04

Taxonomy

Lactobacillus delbrueckii subsp. bulgaricus

Key enzyme

Beta-galactosidase (lactase)

Fermentation

Homofermentative - lactic acid only

Gut behaviour

Transient - does not settle

Descriptive of the ingredient's established biology. Not a claim to diagnose, treat, cure or prevent any disease.