The short version
- Each capsule holds 10 billion CFU (40 mg) of one strain, Lactobacillus rhamnosus GG (LGG), plus 200 mg of inulin fiber. The label is clear about the strain, dose and capsule ingredients.
- LGG has an extensive research record, but the results are uneven and belong to that strain alone: moderate-certainty evidence in children on antibiotics, weaker in adults, and only a non-significant trend for travel-related diarrhea.
- The live count is promised through the expiry date, but no lab or outside seal is shown. On Amazon it cost $17.47 for 30 capsules on Sep 25, 2026, and the listing is non-returnable unless damaged or defective.
- It contains live bacteria: people with weakened immune systems or serious illness should ask a clinician first.
The four checks
Guarantees
PartialSold and shipped by Amazon.com, $17.47 for 30 capsules on Sep 25, 2026. Amazon marks it non-returnable unless damaged or defective; the brand’s 30-day refund policy covers only purchases from culturelle.com [5].
Testing
Not shownThe seller says the live count is met through the expiry date when stored as directed, but names no lab and shows no outside seal. ConsumerLab lists one Culturelle product as tested; which one, and the result, are members-only [6]. See what testing seals mean.
Key: ✓ disclosed or verified · ◐ partial · ✕ missing or not shown. Statuses reflect what we could confirm from the label, the seller's own pages and public sources on the review date.
What is inside
Below is the Supplement Facts panel on the brand’s own site for the 30-count box, read on Sep 25, 2026 [1]: one capsule per serving, 0 calories, 0 g of sugars. New to these panels? See our guide to reading a Supplement Facts panel. The brand now calls the product “Digestive Daily Probiotic”; one field on the Amazon listing still says “Digestive Health” [2].
| Ingredient | Amount per serving | What to know |
|---|---|---|
| Lactobacillus rhamnosus GG | 40 mg (10 billion CFU) | One strain, named to strain level. CFU counts live cells; the seller says it measures them at the expiry date, not at manufacture. A 2022 paper lists GG as ATCC 53103, useful when comparing products [7]. |
| Inulin (chicory root extract) | 200 mg | A prebiotic fiber; the box says “with prebiotics”. See the research section for how the dose compares with studies. |
| Other ingredients | Not quantified | Brand’s image: hydroxypropyl methylcellulose, vegetable magnesium stearate and titanium dioxide (color). The Amazon listing adds sucrose, maltodextrin, sodium ascorbate and silicon dioxide. We could not tell which list is printed on the box you receive [2]. |
The seller also states that it is free from dairy-derived ingredients, lactose, yeast, wheat, eggs, tree nuts, peanuts, gluten and soy (made in a facility that also handles dairy ingredients), and that no refrigeration is needed: store cool and dry, away from sunlight. Directions for ages 12 and up: one capsule daily, two daily when traveling, or one twice daily during antibiotic use and for 10 days after. It adds that some people notice minor bloating, gas or gurgling at first, and to consult a professional if that lasts beyond two weeks [1].
What the research says
Results belong to the strain
The American Gastroenterological Association (AGA) stresses that probiotic effects are “strain- and combination-specific” [8], and a review of LGG trials opens with the same point [3]. LGG is one of the most widely used probiotic strains and has an extensive research record, yet not every trial has shown a benefit, even for the same condition [9]. Nothing below carries over to other probiotic products, and much of it comes from children in clinics or hospitals, not everyday use.
Antibiotic courses
A 2015 review of 12 randomized trials (1,499 people) found that, across 11 of them, diarrhea during antibiotic courses occurred in 12.3% of people taking LGG versus 22.4% of controls, though certainty was rated low. By age, the result was significant in children (moderate certainty) but not in adults, except in a subset taking antibiotics aimed at a stomach bacterium, Helicobacter pylori [3]. The label’s antibiotic directions sit in this research area; the adult evidence is the weaker part.
Sudden stomach illness in children
A 2019 pooled analysis of 18 trials (4,208 children) found no effect on stool volume; in 15 of the trials (3,820 children) LGG was linked to diarrhea lasting about 0.85 day less, with high heterogeneity and methodological limits [10]. A large 2018 US trial of 971 children aged 3 months to 4 years found no difference from placebo in severity or duration [11], and the AGA recommends against probiotics for children with a sudden infectious stomach illness [8]. The capsule is labeled for ages 12 and up, so these are not direct tests of it, but they show how much results depend on the setting. The 2019 analysis also reported effects at daily doses of 10 billion CFU or more, and results of borderline significance below that [10]. The seller presents 10 billion CFU as the amount research shows to be effective [1], but that evidence comes from trials in children, not from tests of this capsule.
Travel
A 2019 pooled analysis found a significant reduction in travelers’ diarrhea for one yeast probiotic (Saccharomyces boulardii), while LGG showed only a trend short of significance (p = 0.08) [4]. NIH notes a 2017 travel-medicine guideline judging the evidence insufficient to recommend probiotics for this [12]. The seller says the capsule “minimizes travel-associated digestive issues” and advises doubling the dose on trips [1]; the research we found is more cautious.
Gas and bloating
Occasional gas and bloating feature in the seller’s headline claim [1][2]. In our searches we found no placebo-controlled trial of LGG alone in otherwise healthy adults measuring these symptoms. The nearest LGG-only data we could open is a 2005 trial in 50 children with a chronic bowel-pain disorder: no benefit for pain, but fewer reports of “perceived abdominal distention” with LGG [13]. The page’s “immune defenses” wording names no outcome, so we have not assessed it.
The 200 mg of inulin
A 2006 dose-response trial of a related fiber (short-chain fructo-oligosaccharides) in 40 healthy volunteers tested 2.5 to 10 g a day and found more stool bifidobacteria at every dose [14]. Here 200 mg is about one-twelfth of the lowest dose. It is a different fiber and outcome, so it settles nothing either way, but we found no human data showing an effect at 200 mg; treat “with prebiotics” as a label feature, not a demonstrated benefit.
Live bacteria are not right for everyone. NIH says harm is more likely in people with severe illness or weakened immune systems, and the FDA has warned about serious infections in premature infants [12]. Rare infections with lactobacilli, including the LGG strain, have been reported, mostly in people with weakened immunity or other risk factors such as artificial heart valves [7]; one case report describes a bloodstream infection in a teenager on immune-suppressing medicines a week after starting LGG capsules, matched to the capsule, with the fever settling after a short antibiotic course [15]. The seller’s own label says to tell a healthcare professional first, particularly with a known immune-compromised condition [1].
Price and where it is sold
On Sep 25, 2026 the Amazon listing for the 30-count box (ASIN B0025ASIRK) showed $17.47 one-time ($0.58 per capsule) or $16.60 with Subscribe & Save, in stock, shipped and sold by Amazon.com; this listing has only the 30-count size [2]. The brand’s own store listed $17.99 for 30 and $26.99 for 50 and linked to Walmart, Target, Amazon, Walgreens and CVS [1]. At one capsule a day a box lasts 30 days; the travel or antibiotic directions halve that. Prices change, so check before buying.
On returns, the Amazon page read “Non-returnable due to Food safety reasons”, with a refund or replacement if the item arrives damaged or defective, requested through Your Orders with a photo [2]. The brand’s own 30-day refund or replacement policy covers only purchases at culturelle.com [5]. The brand is distributed by i-Health, Inc., and its site carries dsm-firmenich group copyright and trademark notices [1].
Who should look elsewhere
- People with weakened immune systems, serious illness, or medicines that suppress immunity: ask a clinician before any live-culture product. Anyone caring for a premature infant should follow the neonatal team’s advice.
- Anyone under 12: the capsule is labeled for ages 12 and up [1].
- People using probiotics for a long-term bowel condition. The AGA found too little evidence to recommend them for several such long-term conditions and suggested that people taking probiotics for those conditions consider stopping and talk with their doctor [8].
- People who want a label claim checked by an outside lab or seal: none is shown here.
- People who avoid titanium dioxide, which the label lists as a capsule color. EFSA concluded in 2021 that it could no longer be considered safe as a food additive; that opinion covered additive use, not other uses [16]. The US FDA still lists titanium dioxide as a permitted food color additive, notes that food regulators in the UK, Canada and Australia and New Zealand did not agree with EFSA’s assessment, and is reviewing a 2023 petition to remove the listing [17]. The seller’s “no artificial dyes” wording does not say whether it counts.
- Anyone who expects to send back an opened box, given the Amazon return notice.
- If you would rather compare another gut-and-digestion product, the SodaTide entry runs the same four checks.
Sources
- Culturelle (distributed by i-Health, Inc.). Product page for Digestive Daily Probiotic Capsules: Supplement Facts image, directions, claims, allergen statements, retailer links and prices, viewed Sep 25, 2026. link
- Amazon.com listing for the 30-count box (ASIN B0025ASIRK): price, seller, return notice, ingredient text and manufacturer field, viewed Sep 25, 2026. Amazon listing
- Szajewska H, Kołodziej M. Systematic review with meta-analysis of randomized trials of LGG for diarrhea during antibiotic courses in children and adults. Alimentary Pharmacology & Therapeutics, 2015. PubMed
- McFarland LV, Goh S. Systematic review and meta-analysis of probiotics and prebiotics for travelers’ diarrhea. Travel Medicine and Infectious Disease, 2019. PubMed
- Culturelle. Refund policy (applies to purchases made at culturelle.com only), viewed Sep 25, 2026. link
- ConsumerLab.com. Brand page for Culturelle; the report-card results are members-only, viewed Sep 25, 2026. link
- Rossi F et al. Survey of published lactobacilli infection case reports, 2019–2021, and safety implications. Nutrients, 2022. PubMed
- American Gastroenterological Association. Press release on its 2020 guideline on probiotics for digestive conditions, June 9, 2020. link
- Segers ME, Lebeer S. Review of how LGG interacts with the human host. Microbial Cell Factories, 2014. PubMed
- Szajewska H et al. Updated systematic review with meta-analysis of LGG in children with acute infectious diarrhea. Alimentary Pharmacology & Therapeutics, 2019. PubMed
- Schnadower D et al. Randomized, double-blind trial of LGG versus placebo in 971 children aged 3 months to 4 years with a sudden stomach illness. New England Journal of Medicine, 2018. PubMed
- National Center for Complementary and Integrative Health (NIH). Overview of probiotic uses, evidence and safety; page last updated August 2019. link
- Bauserman M, Michail S. Randomized, placebo-controlled trial of LGG in 50 children with recurring bowel pain. Journal of Pediatrics, 2005. PubMed
- Bouhnik Y et al. Dose-response trial of short-chain fructo-oligosaccharides and stool bifidobacteria in 40 healthy volunteers. Nutrition Journal, 2006. PubMed
- Vahabnezhad E et al. Case report of a bloodstream infection with a Lactobacillus after starting LGG capsules in an immunosuppressed teenager. Journal of Clinical Gastroenterology, 2013. PubMed
- European Food Safety Authority. News item on its 2021 opinion on titanium dioxide (E171) as a food additive, May 6, 2021. link
- US Food and Drug Administration. Titanium Dioxide as a Color Additive in Foods, viewed Sep 25, 2026. link
This entry is educational and is not medical advice. Ask a qualified clinician before starting any supplement, especially if you are pregnant, nursing, or take medication.