Probiotic

Lactobacillus paracasei

Lactobacillus paracasei, now classified as Lacticaseibacillus paracasei, is a bile-tolerant member of the casei group. It is closely related to Lactobacillus casei but represents a distinct species.

It supports multi-strain digestive formulations by contributing complementary lactic-acid fermentation.

In everyday life, Lactobacillus paracasei contributes useful lactic-acid fermentation to support a balanced gut environment and everyday digestive comfort.

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

Available in

2 products

HAPPYGUT 70B HAPPYGUT 140B

Ingredient profile

8 functions

How it supports the formula

Supports a balanced gut environment through a bile-tolerant probiotic culture.

Produces lactic acid while contributing to normal carbohydrate fermentation.

Adds a distinct casei-group species to a broader multi-strain digestive formula.

Complements related probiotic bacteria without relying on one species alone.

What it is

Lactobacillus paracasei, now classified as Lacticaseibacillus paracasei, is a bile-tolerant member of the casei group. It is closely related to Lactobacillus casei but represents a distinct species.

Scientific identity: Lactobacillus paracasei; scientific identity: Lacticaseibacillus paracasei.
How it works: Ferments carbohydrate to lactic acid: It uses available sugars locally, producing lactic acid and competing for the same nutrients and surfaces as other organisms. Passes through: The population declines within days of stopping, so any effect rests on continued daily intake.
Primary function: It supports multi-strain digestive formulations by contributing complementary lactic-acid fermentation.
What it supports: Lactobacillus paracasei contributes useful lactic-acid fermentation to support a balanced gut environment and everyday digestive comfort.
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 paracasei for a clearly defined role within a thoughtfully balanced formulation.

Formulation purpose: It supports multi-strain digestive formulations by contributing complementary lactic-acid fermentation.
Used in: CARPEDIEM HappyGut 70B Probiotic and CARPEDIEM HappyGut 140B Probiotic.
Works alongside: Lactobacillus paracasei complements Lactobacillus casei, Lactobacillus rhamnosus and Bifidobacterium lactis to support everyday digestive wellness and complementary probiotic activity.
Meaningful contribution: Lactobacillus paracasei contributes useful lactic-acid fermentation to support a balanced gut environment and everyday digestive comfort. Adds a distinct casei-group species to a broader multi-strain digestive formula.
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

A close cousin of L. casei, separated by its genes rather than its behaviour.

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A separate species.

It looks and behaves much like L. casei. The two are told apart by DNA sequencing, not by laboratory tests.

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Taxonomy

Lacticaseibacillus paracasei

Identified by

DNA sequencing, not lab behaviour

Fermentation

Flexible - switches route by fuel

Gut behaviour

Transient - does not settle

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

Functional role

All key functions

The complete functional profile connected with this ingredient.

Supports a balanced gut environment through a bile-tolerant probiotic culture.

Produces lactic acid while contributing to normal carbohydrate fermentation.

Adds a distinct casei-group species to a broader multi-strain digestive formula.

Complements related probiotic bacteria without relying on one species alone.

Supports everyday digestive comfort as part of consistent probiotic nutrition.

Contributes bacterial diversity across complementary fermentation pathways.

Contributes useful lactic-acid fermentation to support a balanced gut environment and everyday digestive comfort.

Works alongside Lactobacillus casei and Lactobacillus rhamnosus to create a more complete, complementary probiotic blend.

Scientific evidence

Selected research

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

Effects of Fermented Milk Containing Lacticaseibacillus paracasei Strain Shirota on Constipation in Patients with Depression: A Randomized, Double-Blind, Placebo-Controlled Trial

Nutrients

Eighty-two patients with constipation consumed 100 mL daily of a beverage containing Lacticaseibacillus paracasei strain Shirota at 100 million CFU/mL, or placebo, for nine weeks. Total PAC-SYM constipation-symptom scores did not differ significantly between groups, but the stool symptom subscale items were more improved in the probiotic group than in placebo.

2021