Probiotic

Bifidobacterium longum

Also known as: B. longum, B. longum 1714, Bifido

Evidence

Dominant infant gut bacteria that supports immune function and may reduce anxiety. Important throughout life.

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Primary uses

Immune support
Anxiety/mood
Gut health
Inflammation

How it works

Immune modulation
GABA production
Anti-inflammatory

Dosage

Typical range: 1-10 billion CFU daily
Timing: Any time
With food: Either way
Duration: Safe long-term
Special populations: Stress, immune support

Forms

Capsules

Safety

Common side effects

Minimal

Contraindications

Severe immunocompromise

Products containing Bifidobacterium longum

Top-scoring supplements in our catalog that list Bifidobacterium longum on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Thorne

FloraMend Prime Probiotic®

Thorne

Complete Biotic

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Evidence notes

Important from infancy through aging

Grade B: Some human trials support key claims; further confirmation needed.

Cited research for Bifidobacterium longum

Clinical studies referenced across Formulate guides that mention bifidobacterium longum. Each links to the full study page with PubMed source + the guides that cite it.

Ford et al. (2014)American Journal of Gastroenterology
Efficacy of prebiotics, probiotics, and synbiotics in irritable bowel syndrome and chronic idiopathic constipation: systematic review and meta-analysis

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.