probiotic · for bloating
LGG Probiotic
Meant to rebalance gut bacteria and firm up the gut lining.
Say that in clinical terms
LGG restores gut microbial balance, strengthens intestinal barrier tight junctions, reduces small intestinal bacterial overgrowth (SIBO), and modulates gas-producing fermentation patterns that cause bloating.
How strong is the research?
41 adults with IBS took it for 6 weeks, as one arm of a three-way trial.
1 paper read, 1 against.
Who was studied: Patients with diagnosed IBS rather than bloating on its own.
How much to take
daily, with or before meals
10–20 billion_CFU
Take 10-20 billion CFU daily. Refrigerated strains may have better viability. Allow 2-4 weeks for gut adaptation.
Before you take it
- No Tolerable Upper Intake Level (UL) for LGG or probiotics has been established by NIH ODS or the Institute of Medicine; no supplemental dose ceiling applies.
- Bacteremia risk in immunocompromised and critically ill patients: A retrospective analysis of 22,174 ICU patients (NIH ODS cited) found 6 genome-confirmed Lactobacillus bacteremia cases among 522 LGG recipients versus 2 among 21,652 non-recipients. Additional case reports document endocarditis and abscess formation in transplant and other immunocompromised patients. LGG should be used with caution or avoided in these populations.
- Antibiotic timing: Probiotic viability is reduced by co-administration with antibiotics. NIH ODS guidance is asymmetric: take LGG at least 2 hours before an antibiotic dose, or 4-6 hours after dosing. Starting within 2 days of the first antibiotic dose is recommended for prevention of antibiotic-associated diarrhea.
When to take it
Best taken: empty stomach
What we make of it
The analysis covers all probiotic strains together and says the picture is uncertain.
The detail
The pooled analysis looks at every probiotic strain for IBS collectively rather than this one, and its authors state explicitly that which strains work remains uncertain.