Probiotic Claims on Food Labels
What "probiotic", "live and active cultures" and "fermented" can mean on food and drink labels, what expert panels say a label should show, and why the same word can describe very different products.
Content last updated . This page has not been medically reviewed.
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Probiotics have an extensive history of apparently safe use, particularly in healthy people, but the risk of harmful effects is greater in people with severe illness or weakened immune systems. Cases of severe or fatal infections have been reported in premature infants who were given probiotics. [1] If that describes you or a child in your care, ask a clinician before using any probiotic product, food or supplement. Probiotics are not a reason to postpone seeing a clinician about a health problem. [1] This page is information only.
What the words are supposed to mean
An expert panel convened by the International Scientific Association for Probiotics and Prebiotics (ISAPP) reinforced the FAO/WHO definition of a probiotic: "live microorganisms which when administered in adequate amounts confer a health benefit on the host". [2] A later ISAPP panel on fermented foods said "fermented food" and "probiotic" cannot be used interchangeably, because a probiotic needs a demonstrated benefit from well-defined, characterized live microorganisms. [3]
That panel set out what it considers honest label wording:
| Label wording | When the ISAPP panel says it fits |
|---|---|
| "Probiotic" with a health benefit | Strain-specific benefit shown in a well-controlled intervention study, proven safety, and enough of that strain in the final product [3] |
| "Contains probiotics" | Some foods could use it if a strain meets probiotic criteria, with conditions [3] |
| "Live and active cultures" | The food was not processed to remove or kill the fermentation microorganisms, and they are present at levels expected for that food [3] |
| "Foods made by fermentation" | Acceptable for pasteurized fermented foods with no live microorganisms in the final product [3] |
The same panel expects that most commercial fermented foods are not in the "probiotic fermented food" category, because they often contain undefined microbial mixtures at variable levels and their benefits have generally not been demonstrated. [3] These are expert recommendations. They are not the law, and local regulators decide what is allowed on a label.
What a probiotic label should show
A 2001 FAO/WHO expert consultation (the report is on probiotics in food) recommended that the microbial species be stated on the label, and the strain too if the product was selected at strain level. It also recommended that the label state the viable concentration of each probiotic present at the end of shelf life. [4] The ISAPP panel reports that Health Canada recognizes more than 20 species of the Lactobacillus group and Bifidobacterium for "probiotic" use in foods if they are delivered at a minimum of 1 billion (10 to the 9th power) colony-forming units per serving. [3] We did not read Health Canada's own page.
For U.S. yogurt, the FDA standard describes a characterizing bacterial culture containing Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus. [5] See live cultures on yogurt and kefir labels.
Drinks, gummies and other formats
- Probiotic drinks and fermented drinks. A drink may be fermented, may be pasteurized afterward, or may have cultures added. The label wording above is how experts separate those. [3] See kombucha and kefir.
- Gummies and capsules. If a gummy or capsule is sold as a dietary supplement, NCCIH says it does not need FDA approval before marketing, and its label may make structure/function claims but not disease-risk health claims without FDA consent. [1] See probiotic strains and labels and probiotic safety. We did not find a source describing how a specific gummy is regulated, so we make no claim about one.
- Home fermentation. Risks are covered in fermented food safety.
Other points
If you have a food allergy, check the allergen statement on any yogurt or drink (see reading food labels); call 911 for trouble breathing or swelling of the face or throat. A fermented food comparison with supplements covers the difference in more detail.
Frequently asked questions
Does "fermented" mean "probiotic"?
No. ISAPP says the terms cannot be used interchangeably. [3]
What does "live and active cultures" prove?
It says the fermentation microorganisms were not removed or killed and are at expected levels. [3] It does not say which strain or that it gives a benefit.
Are probiotic labels checked by regulators for accuracy?
Not described in the sources we read for this page. The NHS says that, because of how probiotics are regulated, it cannot always be sure the bacteria on the label are in the product. [6]
Is a probiotic drink the same as a probiotic supplement?
Not necessarily. Drinks sold as foods and capsules or gummies sold as supplements have different labeling routes. [1] Results for one do not automatically carry to the other.
Who should be careful with probiotics?
NCCIH says people with severe illness, compromised immune systems and premature infants. [1] Ask a clinician.
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
What research and regulators say
| Question | What the source found | Strength of evidence |
|---|---|---|
| Does one probiotic's result apply to another? | NCCIH: different probiotics may have different effects, so a result for one kind of Lactobacillus does not necessarily apply to another. [1] | Established principle in the sources we read |
| Does a result for one probiotic food apply to other foods with the same strain? | The FAO/WHO consultation said data from one probiotic food cannot be extrapolated to other foods. [4] | Expert recommendation |
| Do labeled products match what is inside? | The NHS says that, because of how probiotics are regulated, it cannot always be sure a product contains the bacteria on the label, enough of them, or that they survive to reach the gut. [6] | Regulator-style summary, not a measurement |
| Are health claims on probiotic products supported? | A review of mental-health claims on 14 probiotic supplements found the quality of supporting evidence varied. [7] NHS says there is little evidence for many of the health claims made. [6] | Mixed |
| Are laboratory counts close to labels? | Small studies of supplements, not foods: one UK sample of 5 human products found a product with no detectable viable bacteria, [8] and a Polish sample of 15 products found only a few had viable counts consistent with their labels. [9] | Insufficient evidence for foods |
References
- National Center for Complementary and Integrative Health (NCCIH), Probiotics: Usefulness and Safety. Read 2026-10-23.
- Hill C et al. Expert consensus document. The International Scientific Association for Probiotics and Prebiotics consensus statement on the scope and appropriate use of the term probiotic. Nat Rev Gastroenterol Hepatol 2014. PMID 24912386 (abstract). Read 2026-10-23.
- Marco ML et al. The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on fermented foods. Nat Rev Gastroenterol Hepatol 2021. PMID 33398112; full text read at PMC7925329. Read 2026-10-23.
- FAO and WHO, Probiotics in food: Health and nutritional properties and guidelines for evaluation (FAO Food and Nutrition Paper; includes the report of the 2001 joint expert consultation and a 2002 working group). Read 2026-10-23.
- U.S. Food and Drug Administration, 21 CFR 131.200, Yogurt (standard of identity): eCFR. Read 2026-10-23.
- NHS (UK), Probiotics. Page last reviewed 24 November 2022. Read 2026-10-23.
- Evaluating the scientific evidence to support mental health and well-being claims made on probiotic products. Nutr Health 2025. PMID 39828955 (abstract). Read 2026-10-23.
- Taha MW et al. Assessing Bacterial Viability and Label Accuracy in Human and Poultry Probiotics Sold in the United Kingdom. Microorganisms 2025. PMID 40871437 (abstract). Read 2026-10-23.
- Zawistowska-Rojek A et al. Evaluating the Quality of Selected Commercial Probiotic Products, Both Dietary Supplements and Foods for Special Medical Purposes. Foods 2026. PMID 41596971 (abstract). Read 2026-10-23.