What is the recommended dosage of Lactobacillus gasseri OLL2809?

Specific dosage recommendations for Lactobacillus gasseri OLL2809 have not been established through human clinical trials. Animal studies used doses equivalent to 10^8-10^9 CFU, but human therapeutic doses require further research to determine optimal amounts.

How long does it take for Lactobacillus gasseri OLL2809 to work?

In animal studies, changes in gut microbiota composition were observed within 2-4 weeks of supplementation. However, mood-related benefits through gut-brain axis modulation may require 4-8 weeks of consistent use, though human timeframes are not yet established.

Can Lactobacillus gasseri OLL2809 help with anxiety and depression?

Preliminary mouse studies showed antidepressant-like effects through gut-brain axis modulation and GABA signaling enhancement. However, human clinical trials are needed to confirm these mood benefits and establish therapeutic protocols for anxiety and depression.

Does Lactobacillus gasseri OLL2809 need refrigeration?

Storage requirements depend on the specific product formulation and manufacturer specifications. Many probiotic supplements require refrigeration to maintain viable bacterial counts, though some freeze-dried formulations may be shelf-stable.

What foods contain Lactobacillus gasseri OLL2809 naturally?

Lactobacillus gasseri OLL2809 is a specific laboratory-cultured strain developed by researchers and is not naturally found in common fermented foods. This strain is available only through targeted probiotic supplements containing the specific OLL2809 variant.

Is Lactobacillus gasseri OLL2809 safe for children and during pregnancy?

Lactobacillus gasseri OLL2809 is generally recognized as safe (GRAS) and is derived from naturally occurring gut bacteria, making it suitable for many populations. However, pregnant women and children should consult with a healthcare provider before supplementation, as individual health status and potential interactions may vary. Clinical safety data specifically in these populations remains limited, so medical guidance is recommended.

What is the clinical evidence quality for Lactobacillus gasseri OLL2809's effects on mood and brain health?

Current evidence for Lactobacillus gasseri OLL2809 includes promising preclinical studies in animal models showing mood-supportive effects and increased neurogenesis in the hippocampus, but human clinical trials remain limited. Most research demonstrating antidepressant-like effects and neuronal growth comes from mouse studies rather than large-scale human studies. Further clinical research in humans is needed to establish efficacy and optimal dosing for mood and cognitive health claims.

Does Lactobacillus gasseri OLL2809 interact with antibiotics or other medications?

Lactobacillus gasseri OLL2809, like most probiotic strains, can be affected by broad-spectrum antibiotics, which may reduce its viability and effectiveness. It is generally recommended to take probiotics at least 2 hours apart from antibiotic doses to minimize direct interaction. Individuals taking medications affecting gut motility or immunosuppressants should consult a healthcare provider before supplementing with this strain.

Lactobacillus gasseri OLL2809

Lactobacillus gasseri OLL2809 is a specific probiotic strain that modulates the gut-brain axis through GABA signaling and neurotransmitter regulation. This strain enhances beneficial gut bacteria populations including Akkermansia muciniphila and Bifidobacterium while supporting mood and stress resilience.

Category: Fermented/Probiotic Evidence: 2/10 Tier: Emerging

Lactobacillus gasseri OLL2809 — Hermetica Encyclopedia

Origin & History

Lactobacillus gasseri OLL2809 (recently reclassified as Lactobacillus paragasseri OLL2809) is a probiotic strain originally isolated from healthy human feces. As a native inhabitant of the human gut microbiota, it is typically cultured for probiotic use rather than extracted from plants.

Historical & Cultural Context

No historical or traditional medicine use is documented for Lactobacillus gasseri OLL2809, as it is a recently isolated clinical probiotic strain without ties to traditional systems.

Health Benefits

• Supports mood and stress resilience through gut-brain axis modulation (preliminary evidence from mouse models showing antidepressant-like effects)
• Enhances beneficial gut bacteria populations including Akkermansia muciniphila, Bifidobacterium, and other Lactobacillus species (animal studies)
• Promotes hippocampal neurogenesis with increased doublecortin-positive neurons (preclinical evidence)
• Strengthens intestinal barrier function through upregulation of tight junction proteins like occludin and claudins (mechanistic studies)
• Modulates immune function via IL-10 production and regulatory T cell activation (preliminary evidence)

How It Works

Lactobacillus gasseri OLL2809 modulates the gut-brain axis by influencing GABA neurotransmitter signaling pathways and promoting vagal nerve communication between the intestines and brain. The strain produces metabolites that enhance the growth of beneficial bacteria like Akkermansia muciniphila, which strengthens intestinal barrier function and reduces inflammatory cytokine production. This probiotic also influences serotonin synthesis in the gut, contributing to mood regulation and stress response modulation.

Scientific Research

Clinical evidence for OLL2809 is limited to preclinical models and mechanistic studies. A mouse model of chronic social defeat stress showed antidepressant-like effects and gut microbiota modulation after 2 weeks of oral administration. Prior human studies noted immunomodulatory effects in young athletes, but specific trial details and PMIDs were not available in the research dossier.

Clinical Summary

Current evidence for Lactobacillus gasseri OLL2809 comes primarily from preliminary animal studies in mouse models. These studies demonstrated antidepressant-like behavioral effects and significant increases in beneficial gut microbiota populations. However, human clinical trials are limited, and the available research focuses mainly on microbiome composition changes rather than clinical outcomes. The evidence strength remains preliminary, requiring larger human studies to establish therapeutic efficacy and optimal dosing protocols.

Nutritional Profile

Lactobacillus gasseri OLL2809 is a probiotic bacterial strain with negligible direct macronutrient contribution at typical supplemental doses (approximately 10^8–10^10 CFU per serving). As a bacterial organism, it contains: Protein: bacterial cell wall and cytoplasmic proteins comprising approximately 50–60% of dry cell mass, including surface-layer proteins (S-layer proteins) and moonlighting proteins that mediate host interactions; these are largely degraded during digestion and do not contribute meaningfully to dietary protein intake. Carbohydrates: cell wall peptidoglycans and exopolysaccharides (EPS); the EPS produced by OLL2809 are bioactive compounds implicated in immunomodulatory and gut-brain axis effects, with structural composition including glucose and galactose residues. Lipids: membrane phospholipids and lipoteichoic acids (LTA) at trace levels; LTA serves as a key signaling molecule interacting with Toll-like receptor 2 (TLR2). Bioactive compounds: Short-chain fatty acid (SCFA) precursor activity — fermentation byproducts including lactic acid (D- and L-isomers) and acetate at micromolar concentrations in situ; bacterial DNA fragments (CpG motifs) with immunostimulatory properties; cell wall-derived muramyl dipeptide (MDP), a NOD2 receptor ligand. Bioavailability notes: The strain demonstrates moderate gastric acid and bile salt tolerance relative to other L. gasseri strains, supporting viable intestinal colonization. Postbiotic fractions (heat-killed cells and secreted metabolites) may retain partial bioactivity. No significant contribution to dietary vitamins or minerals at standard doses.

Preparation & Dosage

No clinically studied dosage ranges for OLL2809 in humans have been established. Preclinical mouse studies used oral administration over 2 weeks without specified CFU doses. Related L. gasseri strains maintain viability above 10^6 CFU/g in fermented products. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Bifidobacterium species, Akkermansia muciniphila, Prebiotics (inulin, FOS), Vitamin D, Omega-3 fatty acids

Safety & Interactions

Lactobacillus gasseri OLL2809 is generally considered safe for healthy adults with minimal reported adverse effects in animal studies. As with most probiotics, potential mild gastrointestinal symptoms like bloating or gas may occur during initial use. Immunocompromised individuals should consult healthcare providers before use due to potential risk of probiotic bacteremia. Safety data during pregnancy and lactation is insufficient, and interactions with antibiotics may reduce probiotic effectiveness.