What is the recommended dosage for Lactobacillus rhamnosus GG?

General: 10-20 billion CFU/day; Ibs Support: 10 billion CFU/day for 4-8 weeks; Aad Prevention: 10-20 billion CFU/day (start with antibiotic, continue 7 days after)

What are the side effects of Lactobacillus rhamnosus GG?

Potential side effects include: Mild gas and bloating during initial use (usually resolves in 1-2 weeks), Rare reports of bacteremia in severely immunocompromised individuals, Occasional loose stools during adjustment period, Very rare: systemic infection in critically ill patients with central venous catheters.

What is Lactobacillus rhamnosus GG and how does it work for gut health?

Lactobacillus rhamnosus GG (LGG) is the most extensively studied probiotic strain in the world, with over 1,000 published studies. It has unique pili (hair-like structures) that help it adhere to the intestinal wall, enhancing its colonization and interaction with the immune system. Research demonstrates its efficacy in preventing and treating acute diarrhea, reducing antibiotic-associated diarrhea, and supporting overall gut barrier function.

What is the recommended dosage of Lactobacillus rhamnosus GG?

Clinical evidence supports dosages of 1 billion to 20 billion CFU per day, with 10-20 billion CFU being commonly used in adult studies. For prevention of antibiotic-associated diarrhea, it is typically started at the same time as antibiotic therapy and continued for 1-2 weeks after completion. LGG is available in capsules, powders, and dairy products.

Are there side effects or interactions with Lactobacillus rhamnosus GG?

LGG has the most comprehensive safety data of any probiotic strain and is well-tolerated by children, adults, and elderly individuals. Rare cases of bacteremia have been reported in severely immunocompromised patients, so LGG should be avoided in individuals with central venous catheters or severe immune deficiency. For the general population, it is considered very safe.

Lactobacillus rhamnosus GG
Lactobacillus rhamnosus GG

probiotic_strain

別名: LGG, Lacticaseibacillus rhamnosus GG, ATCC 53103

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About

Lactobacillus rhamnosus GG (LGG) is one of the most extensively studied probiotic strains in the world, with over 1,000 published clinical studies. It supports gut barrier function by upregulating tight junction proteins and may help modulate the intestinal immune response via Toll-like receptor signaling. Research suggests LGG may be particularly beneficial for antibiotic-associated digestive issues and supporting overall digestive comfort.

How It Works

Enhances gut barrier function by upregulating tight junction proteins (claudin-1, occludin, ZO-1) and modulates intestinal immune response via Toll-like receptor signaling; produces soluble factors p75 and p40 that activate Akt pathway in epithelial cells preventing cytokine-induced apoptosis.

Evidence For Conditions

症状・状態	グレード	研究数	参加者数
Antibiotic-Associated Diarrhea (AAD)	A	20	4000	詳細を見る →
Irritable Bowel Syndrome (IBS)	B	8	1200	詳細を見る →

Side Effects

Mild gas and bloating during initial use (usually resolves in 1-2 weeks)
Rare reports of bacteremia in severely immunocompromised individuals
Occasional loose stools during adjustment period
Very rare: systemic infection in critically ill patients with central venous catheters

Drug & Supplement Interactions

Antibiotics (may reduce probiotic viability; space dosing 2 hours apart)
Immunosuppressants (theoretical risk of infection in immunocompromised patients)
Antifungals (no known interaction but may affect gut flora balance)

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Related Ingredients

Bifidobacterium longum Bifidobacterium bifidum Lactobacillus gasseri Lactobacillus casei Bifidobacterium lactis

基本情報

用量: General: 10-20 billion CFU/day; Ibs_Support: 10 billion CFU/day for 4-8 weeks; Aad_Prevention: 10-20 billion CFU/day (start with antibiotic, continue 7 days after)
剤形: capsule powder sachet chewable tablet
天然の供給源: Fermented dairy products, Available primarily as commercial probiotic supplements
上限量: Generally well-tolerated up to 40 billion CFU/day in clinical trials
推奨摂取タイミング: On an empty stomach or 30 minutes before meals for optimal survival

エビデンスの要約

Antibiotic-Associated Diarrhea (AAD) A

Irritable Bowel Syndrome (IBS) B

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