One product, one panel, one record.
Florastor Dual Action Probiotic Supplement — label audit
Biocodex prints "Total Probiotic Cultures 11 billion CFU" on its women's SKU and prints no CFU count at all on its flagship — not on the label, not on the product page, not in either government record. Same company, same shelf, same year, same panel designer.
This page is an audit of a label. It records what this product’s panel discloses, what of that could be checked against a primary record, and what could not. The score below ranks this product on that disclosure and on nothing else.
The record this page rests on
- NIH label record
- Label read on
- The most recent dated artefact behind this page. Labels change; this is how old our reading of it is.
- Cohort
- Addendum — outside the founding denominators Torn down 2026-07-31, outside the frozen founding cohort of 27 and outside every D27 denominator.
- How deep this went
- Full forensic teardown Panel transcribed, every strain designator queried, every certification chased to its issuer’s own register, and the literature behind each marketing claim opened and read.
The Label Verifiability Score for this product
74.4 out of 100
Rank 46 of the 154 products in this audit the rubric can score. This rank is shared with 2 other products — 3 products sit on 74.4 and are tied. They hold the position jointly; no tiebreaker is applied, because every tiebreaker available here would be a number the rubric deliberately refused to weigh, smuggled back in to make a list look tidier.
The score measures one thing: how much of what you are buying this company tells you, and how much of that survives being checked against a source that is not the company. It does not measure whether the product works — this site holds no efficacy data of its own, and 0 of 294 organism slots in the founding cohort carry a strain with a human randomised trial for any male-specific outcome, so nobody in this category has evidence that would support a ranking by effect.
Computed over 86% of the rubric by weight — the share of the five questions below this record could answer. The remaining question is unanswered, and unanswered is not nought: it leaves the divisor rather than dragging the score down. That share travels with the number and is never dropped — this score over 86% of the weight and the same score over all of it are different claims.
| Component | Weight | What was counted, and where | Fraction | Weight × fraction |
|---|---|---|---|---|
| Strain identity printed on the panel | 0.24 | 1 of 1 organism slot carries a printed strain designator. | 1 / 1 = 1.0000 | 0.2400 |
| Per-organism amount printed | 0.20 | 1 of 1 organism slot has an amount of its own; the rest are inside a blend total. | 1 / 1 = 1.0000 | 0.2000 |
| What the CFU count is measured against | 0.22 | Potency basis "no-cfu-number": CFU figure printed no, single basis stated no, basis reaches expiry no — 0 of 3. | 0 / 3 = 0.0000 | 0.0000 |
| Printed designators that lead to a human trial | 0.20 | 1 of 1 checked organism slot resolves to at least one human randomised trial under the designator exactly as printed. This counts whether the identity leads to a trial, never what the trial found. | 1 / 1 = 1.0000 | 0.2000 |
| Certification confirmed at the issuer’s own register | 0.14 | Every certification on this record is brand-asserted with the register unreachable, or not yet queried. An unreachable register is a fact about the verification infrastructure, not about this brand, so it may not move its position. | Not answered | — excluded from the divisor, not counted as nought |
0.6400 — the last column added up — divided by 0.86, the weight this record could answer, is 0.7442. Multiplied by 100 and rounded to one decimal, that is the 74.4 above.
See this product’s row in the full ranking, alongside the other 153 scored products, or read what each of the five components asks and how to check it .
What this label discloses
Everything in this table is what the product itself states — on the printed panel, on the brand’s own page, or in the label record the manufacturer filed. Nothing in it is checked yet; checking is the next section.
| Disclosure | As recorded |
|---|---|
| CFU as printed | No CFU figure recorded |
| What that count is measured against | No CFU figure |
| Strain designators | All organisms coded |
| Organism slots transcribed here | 1 — the full panel |
| Marketed as | Unisex |
No CFU figure appears anywhere on the panel.
Every organism on the panel carries a printed strain designator. Whether those designators lead anywhere is a separate question, answered below.
| Organism as printed | Designator as printed | Quantity as printed | What the designator resolves to | The query we ran |
|---|---|---|---|---|
| Saccharomyces boulardii | CNCM I-745® | 500 mg (per 2-capsule serving; 250 mg per capsule) | Human RCT | "Saccharomyces boulardii CNCM I-745" AND (randomized controlled trial[pt]) |
What of that is verifiable
A disclosure is verifiable when a reader can open a record that neither we nor the brand controls and see the same thing. Below is every dated artefact this page rests on. What is absent from this list is not verified, however reasonable it sounds.
- Photograph of the printed panel — florastor_dual_action_probiotic_100_capsules_panel2.jpghttps://florastor.com/products/florastor-dual-action-probiotic-supplement — Address given, not linked: this site does not link out to the products it audits. captured The brand's own Supplement Facts artwork on its CDN, transcribed by image read. The panel exists only inside this photograph — as on every other product read the same day, no brand puts its own panel into machine-readable HTML.
- NIH Dietary Supplement Label Database record — DSLD 270390 (opens in a new tab) captured Biocodex, 50 vegetable capsules, UPC 7 04142 00007 1, entered 2022-06-16, on market. UPC cross-check passed: the site's 50-count variant barcode 704142000071 matches this record exactly, so the panel published here is tied to the SKU on the page. Source of the "For men and women" printed copy and the titanium-dioxide-free statement.
- NIH Dietary Supplement Label Database record — DSLD 206744 (opens in a new tab) captured The 30-count record, entered 2019-09-24. Carries the same absence of any CFU figure and the same "For men and women" statement.
How many of its strains have a human trial for what it is sold for
Across the frozen founding cohort, 0 of 294 organism slots (0.0%) carry an organism with a human randomised controlled trial for any male-specific outcome. Not for this product — for all 27 of the founding teardowns, taken together. That is the number to hold against any men’s probiotic, including this one.
Two further founding-cohort figures for context: only 43 of 294 organism slots carry a strain with any human RCT at all under the exact code printed on the label, and only 2 of 27 products have a published human trial of the finished formula — the thing actually in the bottle. All three figures divide by the frozen cohort of 27 teardowns and 294 organism slots, never by every teardown on this site.
For this product specifically, 1 organism slot carries a strain with a human RCT under the exact designator printed on the label.
A word on what a designator has to clear before it counts here. The organism must be named with the exact strain code that appears in the trial, the trial must be in humans, and the code must return that trial when a reader searches it. A species name does not qualify: the trials in this field are of strains, and a species contains thousands of them.
What it costs per day
$67.99 — the daily cost has not been derived from this price.
- Price
- $67.99 USD
- What that buys
- 100-capsule bottle (50 servings at 2 capsules; suggested use is 2 capsules 1–2 times daily)
- Price checked
- — the source we read it fromhttps://florastor.com/products/florastor-dual-action-probiotic-supplement — Address given, not linked: this site does not link out to the products it audits.
What certification it holds, checked at the issuer’s own register
A badge on a bottle is a claim like any other. Every row below was checked — or not checked — at the certifier’s own public register, never at the badge. Across the frozen founding cohort, 2 of 27 products hold a certification we could confirm at the issuer — a founding-cohort figure, not a count over every teardown on this site.
| Programme | Status at the issuer | Checked |
|---|---|---|
| NSF Certified Gluten-Free | Register unreachable | 31 July 2026 |
| Non-GMO | Register unreachable | 31 July 2026 |
| Titanium Dioxide Free | Not checked | not checked |
NSF Certified Gluten-Free
The certifier’s register could not be queried at all. That is a finding about the verification infrastructure, not about the brand.
Printed on the carton and verified as printed in the brand's own package photograph. The issuer's register could not be queried: nsf.org/certified-products-systems returns HTTP 403, listings.nsf.org serves an Angular application that returns index.html for every API path tried, and the legacy info.nsf.org/Certified/GlutenFree/ path returns 404. Brand-asserted and unverified — never "does not hold it". Scope trap worth naming: NSF's gluten-free programme certifies the absence of gluten. It says nothing about viable yeast count, strain identity, potency at expiry or contaminants, and it is routinely mistaken for NSF's contents-certification or Certified for Sport programmes. This product carries no NSF contents certification, no USP verification and no Informed Choice mark.
Non-GMO
The certifier’s register could not be queried at all. That is a finding about the verification infrastructure, not about the brand.
A generic seal on the carton with no issuer mark identified beyond it; the Non-GMO Project register returns HTTP 404. Brand-asserted and unverified.
Titanium Dioxide Free
We have not queried this register for this product. It does not mean the product holds nothing.
A formulation claim, not a certification, and corroborated as printed copy by DSLD 270390 — "100% titanium dioxide free clear capsules." Genuinely useful given the EU's 2022 titanium dioxide food ban; a real, if narrow, positive.
How it differs from the same brand’s women’s version
Across the fourteen same-brand men’s-versus-women’s label diffs run inside the frozen founding cohort, zero men’s or default formulas contain a probiotic strain, identified by designator, that was selected on male-specific evidence. In eight of the fourteen the sex-specific differentiator is a botanical or a mineral, and in five of the fourteen the women’s SKU is better-specified, cheaper, or both — “better-specified” meaning the panel that discloses more, never the panel with more in it. The rule behind each of those counts, and all fourteen pairs classified against it , are published in full. Diffs run on teardowns added since sit outside this fourteen, and outside the sentence above.
Compared against Her Florastor® Balanced Benefits Digest + De-stress. Diffed .
What the two panels differ by
- The women's SKU declares a viable count — "Total Probiotic Cultures 11 billion CFU" — and the flagship declares none, anywhere. Same company, same shelf, same year, same panel designer. The brand demonstrably knows how to print the number and chose not to on the product it sells the most of. Her Florastor panel image against the Dual Action panel image, both read 2026-07-31
- Zero shared organisms. Dual Action is one yeast, Saccharomyces boulardii CNCM I-745 at 500 mg. Her Florastor is HOWARU® Lacticaseibacillus rhamnosus HN001 33.3 mg, Lactobacillus acidophilus La-14® 75 mg, a Synbio® Blend at 15 mg (Lcb. rhamnosus IMC 501, Lcb. paracasei IMC 502) and L-theanine 200 mg. Her Florastor panel image and florastor.com/collections/all/products.json, read 2026-07-31
- Dual Action is a single ingredient, fully itemised. Her Florastor is a "Proprietary Blend" plus a "Synbio® Blend", giving milligrams for two of four strains and per-strain CFU for none. Her Florastor panel image, read 2026-07-31
- Dual Action is 2 capsules one to two times daily at $28.97 for 30 count and $67.99 for 100. Her Florastor is 1 capsule daily at $28.97 for 30 count and $59.99 for 90. florastor.com/collections/all/products.json, 9-SKU catalogue, read 2026-07-31
What is identical across the pair
- Neither product tells a buyer when its count is true. Her Florastor's 11 billion CFU carries no at-manufacture and no at-expiry footnote either.
- Both 30-count bottles are priced at $28.97.
Every finding on this page, with the record behind it
Finding 1 no-cfu-declaration-anywhere
The word CFU does not appear on the label, on the product page, or in either government record, and neither does "billion" — verified by regex over the full page HTML. The product is dosed exclusively in milligrams of yeast, 500 mg per 2-capsule serving. Both halves of this belong together. Against: a buyer cannot tell how much of that 500 mg is live yeast rather than dead cells, cell-wall debris and excipient, two products both declaring "500 mg S. boulardii" could differ tenfold in viable count, and there is no way to compare this product to any CFU-labelled competitor. For: mg dosing is the convention in the clinical literature for this specific organism, so the label matches how the evidence is expressed.
The record: DSLD 270390 and DSLD 206744, plus a regex over the full product page HTML, all 2026-07-31 — open it (opens in a new tab)
Finding 2 same-brand-declares-cfu-on-its-womens-sku
Her Florastor Balanced Benefits prints "Total Probiotic Cultures 11 billion CFU". The flagship prints nothing. The single most citable line in this teardown.
The record: Her Florastor panel image against the Dual Action panel image, both read 2026-07-31
Finding 3 dual-action-names-two-actions-and-the-product-has-one-ingredient
"Dual" refers to two asserted mechanisms in marketing copy — flushes bad bacteria, boosts the good — not to two actives. A shopper scanning a shelf reads "dual action" as two things in the bottle.
The record: Panel florastor_dual_action_probiotic_100_capsules_panel2.jpg — one active, one number
Finding 4 number-one-selling-claim-substantiated-as-reference-on-file
"#1 selling probiotic strain worldwide†", footnoted in full as "† In Value. Reference on File." No market, no measurement window, no data source, no date, against a category norm of citing SPINS or IRI with a stated 52-week window.
The record: florastor.com product page and carton copy, read 2026-07-31 — open ithttps://florastor.com/products/florastor-dual-action-probiotic-supplement — Address given, not linked: this site does not link out to the products it audits.
Finding 5 study-counts-not-reproducible-from-pubmed
"Over 130 clinical studies" and "over 1,000 publications" against 109 PubMed records for "CNCM I-745". Not disprovable — seventy years of European trade and pre-indexing literature is real — and not reproducible either.
The record: PubMed E-utilities, "CNCM I-745", run 2026-07-31
Finding 6 allergen-disclosure-placement
The carton states "Contains: Lactose (derived from milk)" and DSLD 270390 transcribes Lactose 32.5 mg per capsule inside the Supplement Facts panel on the 50-count. The website FAQ says Florastor "does not include the risk of exposure to or cross-contamination from any major food allergen or the following ingredients: corn, peanuts, tree nuts, sesame, soy, meat, fish, shellfish, egg protein, or gluten." Lactose is a milk-derived sugar rather than milk protein, so both statements can be technically defensible at once — but a milk-allergic buyer reading only the FAQ would not learn there is a milk-derived ingredient.
The record: DSLD 270390 against the florastor.com FAQ, both read 2026-07-31 — open it (opens in a new tab)
Finding 7 no-immunocompromise-or-catheter-caution
Saccharomyces boulardii fungemia is a well-described complication in patients with central venous catheters and in critically ill or immunocompromised patients — "Saccharomyces boulardii" AND fungemia returns 58 PubMed records, and 15 when narrowed to central venous catheter, ICU or critically ill. The product page's only warnings are pregnancy and nursing consultation and keep-out-of-reach. There is no immunocompromise or indwelling-catheter caution anywhere on the page or the panel, on a product marketed for everyday use and sold over the counter in pharmacies.
The record: PubMed E-utilities, two queries, run 2026-07-31, against the florastor.com product page
Finding 8 cost-per-day-is-a-range-not-a-number
$1.36 to $3.96, because suggested use is 2 capsules one to two times daily across four pack sizes. Any comparison table that prints a single number for this product is wrong.
The record: florastor.com pricing for all four sizes, read 2026-07-31 — open ithttps://florastor.com/products/florastor-dual-action-probiotic-supplement — Address given, not linked: this site does not link out to the products it audits.
What we could not verify
Every gap below is published rather than deleted. Most are derived automatically from the empty fields in this page’s own record, so a gap cannot be hidden by leaving a box blank.
- The CFU figure on the panel
- No CFU figure was recorded for this product. Either the panel prints none or it was not transcribed; this teardown does not yet distinguish between the two.
- NSF Certified Gluten-Free status
- Printed on the carton and verified as printed in the brand's own package photograph. The issuer's register could not be queried: nsf.org/certified-products-systems returns HTTP 403, listings.nsf.org serves an Angular application that returns index.html for every API path tried, and the legacy info.nsf.org/Certified/GlutenFree/ path returns 404. Brand-asserted and unverified — never "does not hold it". Scope trap worth naming: NSF's gluten-free programme certifies the absence of gluten. It says nothing about viable yeast count, strain identity, potency at expiry or contaminants, and it is routinely mistaken for NSF's contents-certification or Certified for Sport programmes. This product carries no NSF contents certification, no USP verification and no Informed Choice mark.
- Non-GMO status
- A generic seal on the carton with no issuer mark identified beyond it; the Non-GMO Project register returns HTTP 404. Brand-asserted and unverified.
- Titanium Dioxide Free status
- A formulation claim, not a certification, and corroborated as printed copy by DSLD 270390 — "100% titanium dioxide free clear capsules." Genuinely useful given the EU's 2022 titanium dioxide food ban; a real, if narrow, positive.
- The NSF Certified Gluten-Free claim at the issuer's register
- nsf.org returns 403 to automation, listings.nsf.org is an Angular application with no queryable API path, and the legacy gluten-free listing path 404s. Recorded as brand-asserted and unverified, which is a fact about the register and not a finding against Florastor.
- The Non-GMO claim at the issuer's register
- The Non-GMO Project product finder returns HTTP 404.
- "Over 130 clinical studies" and "over 1,000 publications"
- PubMed returns 109 records for "CNCM I-745". The brand's larger figures presumably include non-indexed European literature across seventy years of use. Not disprovable, and not reproducible from PubMed either.
- Where the lactose row sits on the 100-count carton
- DSLD 270390 transcribes the 50-count panel with two Supplement Facts rows — S. boulardii CNCM I-745 250 mg per capsule and Lactose 32.5 mg per capsule — while the 100-count carton read here shows only the yeast in the panel with lactose under Other Ingredients. The actives reconcile exactly (250 mg × 2 capsules = 500 mg), so this is a label-version difference between pack sizes rather than a discrepancy in dose. A physical 100-count carton was not obtained to settle it.
- The substantiation behind "#1 selling probiotic strain worldwide"
- The footnote reads, in full, "† In Value. Reference on File." No market, no measurement window, no data source and no date. Unfalsifiable as printed.
How to check every line of this page yourself
Nothing on this page requires trusting us. Every claim above resolves to a record you can open:
- Open the NIH Dietary Supplement Label Database record linked at the top of this page. It is the label the manufacturer filed, not our transcription of it.
- Compare the CFU line and the suggested-use line against the disclosure table above. If they disagree with us, we are wrong and we want to know.
- Take any strain designator from the panel and run the query printed beside it. The query is published precisely so you can get a different answer than we did.
- Divide the price by the number of days the label’s own dose instructions make the container last. That arithmetic is the whole of the cost-per-day row.
- Search the certifier’s own register for this product, not for the brand. A company can participate in a programme without this product being on its list.
This is the best-disclosed product read in its batch, and it does not tell you how much live yeast is in the capsule.
The panel is one line long. Saccharomyces boulardii CNCM I-745® — 500 mg. CNCM is the Collection Nationale de Cultures de Microorganismes at the Institut Pasteur: a real, public, deposit-backed accession that anybody can look up and query. No proprietary blend. No hidden co-ingredients. One active, one number.
And the number is a mass, not a viable count. The word “CFU” appears nowhere — not on the label, not on the page, not in either government record. Neither does “billion”. Two products both declaring “500 mg S. boulardii” could differ tenfold in live organisms, and a buyer comparing this to the “50 Billion CFU” bottle on the next shelf has nothing to compare with.
There is a real defence, and it belongs in the same paragraph: S. boulardii is a yeast, and milligrams are the unit its clinical literature uses. The label matches how the evidence is expressed.
Which makes the next fact the one worth quoting. Biocodex prints a CFU count on its women’s SKU. Her Florastor Balanced Benefits: “Total Probiotic Cultures 11 billion CFU.” Same company, same shelf, same year, same panel designer. The brand knows how to print the number and does not print it on the product it sells the most of. (Fairly: Her Florastor’s 11 billion carries no basis footnote either. Neither product tells you when its count is true.)
What the strain does buy you is rare in this category: the retail dose matches the trial dose. PMID 30694338 dosed 250 mg twice daily — 500 mg, exactly this serving — and the strain-specificity proof sits one meta-analysis away. PMID 30278238 put three probiotics through one indication: S. boulardii CNCM I-745 cut travellers’ diarrhoea (RR 0.79, 95% CI 0.72–0.87, p < 0.001), L. rhamnosus GG trended (p = 0.08), and L. acidophilus at species level did nothing (p = 0.16). That single result is the whole argument for why a designator matters.
Two more things worth saying out loud. The label says “For men and women” — the government record transcribes it as printed copy — so nothing here claims to be a men’s product; the brand’s only sex-targeted SKU is the women’s one, and there is no “His Florastor”. And the FAQ volunteers something almost nobody in this category admits: “Florastor does not colonize the gut and is naturally eliminated within five days after last consumption.”