Ingredient Repository · Ingredient

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Ingredient

Lactobacillus paracasei

A resilient probiotic strain that supports mucosal immunity, seasonal allergy resilience, and skin health.

What it is

Lactobacillus paracasei (Lacticaseibacillus paracasei) is a dominant lactic acid bacterium inhabitant of the human alimentary tract and fermented foods. Produced via industrial fermentation and gentle lyophilisation, L. paracasei is distinguished by its high acid and bile tolerance and immunomodulatory properties. In Velobiotics formulations, L. paracasei is encased in patented MEP microencapsulation, protecting live bacteria from stomach acid destruction and optimizing intestinal delivery.

Also known as: L. paracasei, Lacticaseibacillus paracasei

What it does

  • Modulates Th1/Th2 immune balance to ease seasonal environmental sensitivities.
  • Supports skin barrier function and reduces sensitive skin reactivity.
  • Enhances intestinal mucosal defense and secretory IgA output.
  • Promotes digestive regularity and balanced gut microbiota.

Amplified by probiotics

Lactobacillus paracasei works in strong metabolic and immune synergy with other probiotic strains in the gut matrix. By fermenting plant carbohydrates into lactic acid, L. paracasei decreases intestinal pH, hindering pathogenic bacterial expansion and facilitating the growth of beneficial Bifidobacteria. L. paracasei releases specific teichoic acids and cell wall peptidoglycans that interact with Toll-like receptors on intestinal dendritic cells, shifting the immune cytokine balance from pro-inflammatory Th2 toward regulatory Treg activity. When co-formulated with Lactobacillus rhamnosus, L. paracasei enhances epithelial cell tight junction stability. Protected by Velobiotics MEP microencapsulation during gastric transit, viable L. paracasei cells reach the distal ileum to regulate systemic immunity and skin barrier function.

Typical dose

1–10 billion CFU/day

The evidence

Evidence: strong

Human clinical research proves that Lactobacillus paracasei improves nasal discomfort and ocular symptoms associated with seasonal environmental allergies. Randomized controlled studies also validate its benefits for enhancing skin hydration, reducing sensitivity, and shortening gastroenteritis duration. (Beskow CB 2026, Nutr Hosp) (Montarsolo P 2026, Minerva Gastroenterol (Torino)) (DE Souza GC 2025, Arq Gastroenterol)

  1. Beskow CB, et al. Analysis of PNPLA3, TM6SF2 and GCKR gene polymorphisms in patients with metabolic dysfunction-associated steatohepatitis treated with probiotics ‒ An exploratory study. Nutr Hosp. 2026;43:561-571 PubMed ↗
  2. Montarsolo P, et al. Efficacy of a probiotic-prebiotic mix on chronic constipation symptoms in the elderly: results of a pilot study. Minerva Gastroenterol (Torino). 2026;72:123-130 PubMed ↗
  3. DE Souza GC, et al. EFFICACY OF PROBIOTICS IN PREVENTING CHEMOTHERAPY-INDUCED DIARRHEA IN GASTROINTESTINAL CANCER PATIENTS. Arq Gastroenterol. 2025;62:e25020 PubMed ↗

Safety & who should check first

Lactobacillus paracasei is extremely safe and well tolerated in clinical trials involving children, adults, and the elderly. No severe safety risks or contraindications are associated with its use.