Probiotic
Lacticaseibacillus casei
Also known as: Lactobacillus casei, L. casei, Lacticasei casei
A well-researched probiotic strain supporting digestive health, immune function, and overall gut microbiome balance.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Digestive health
- Immune support
- Gut microbiome balance
- Diarrhea prevention
How it works
- Colonizes intestinal mucosa
- Produces lactic acid lowering gut pH
- Competes with pathogenic bacteria
- Stimulates immune responses
Dosage
- Typical range
- 1-20 billion CFU daily
- Timing
- Any time
- With food
- Optional
- Duration
- Safe for ongoing daily use
- Special populations
- Studied across all age groups including pediatric
Forms
- Capsule
- Fermented dairy
Safety
Common side effects
- Mild gas initially
Evidence notes
Extensive clinical research including large RCTs
Grade A: Multiple well-designed human trials support the main claims.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.