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Reuteri ReferenceLactobacillus reuteri

L. reuteri in Food and Supplements

By the Reuteri Reference editors / / 2 min read

Short answer. Reuteri in food and supplements is not the same thing: some foods may contain lactobacilli but the strain and amount are rarely stated, while a supplement label may name the organism but leave other details out. Read both as partial information. A food does not give you a labeled, known strain, and a supplement does not replace a varied diet or dental care.

Key points

  • Food sources rarely specify strain or amount.
  • Supplements name organisms but may omit key details.
  • Neither food nor a supplement replaces brushing and dental visits.
  • Read the bottle itself, not only the seller's web page.

Food: general lactobacilli, rarely a labeled strain

Some fermented foods contain live lactobacilli, but a yogurt or fermented product usually does not tell you which strain is present or how much. A package may say live cultures without naming them. For a reader curious about reuteri specifically, food labels are usually too vague to answer the question.

That vagueness is not a flaw, since food is sold as food. It just means a food label cannot be used the way a supplement label sometimes can, to identify a particular organism.

Supplements: more detail, with gaps

A probiotic supplement label may name its organisms and give a total count. That is more information than most foods give, but it is not complete. The seller of ProDentim, a chewable oral probiotic as the seller sells it, lists three strains including Lactobacillus reuteri and a total of 3.5 billion, without per-strain amounts.

The seller also names inulin, malic acid, tricalcium phosphate and peppermint, with no amounts given. These are the seller's statements, and a reader should compare them with the printed label.

What else is in the tablet?

Other ingredients are worth a look, because they affect who might want to be careful. Inulin is a prebiotic fiber, malic acid is a fruit acid used for flavor, tricalcium phosphate is a mineral compound used in tablets, and peppermint is a flavoring. Some people are sensitive to prebiotic fiber or to mint.

The seller labels the product gluten-free, non-GMO and non-habit-forming. Those are the seller's labels, and a gluten-free statement is not a certification. Anyone with an allergy should ask a pharmacist or doctor before using a supplement.

Neither food nor supplement is a stand-in for dental basics

Whether a source of lactobacilli comes from a yogurt or a tablet, it does not take the place of brushing twice a day with fluoride toothpaste, cleaning between the teeth once a day, or regular dental checkups. ProDentim does not replace any of those either.

A practical way to use this guide is to compare the seller's page with the label on the bottle, note any differences in wording, and bring both to a dentist or pharmacist if you have questions.

Questions readers ask

Does eating fermented food mean I am getting L. reuteri?

Not necessarily. Many fermented foods contain lactobacilli of various kinds, and the label rarely says which strains or how much.

Why does the product description sometimes say candy and sometimes tablet?

The seller's own pages use different wording in different places. Label category is dietary supplement, so check the bottle for the form and directions.

Are supplements approved before they are sold?

No. Dietary supplements are not approved by the FDA before sale, and the seller's own page says its statements have not been evaluated by the FDA.

Talk to a professional. Persistent bleeding, pain, swelling, loose teeth or sores that do not heal need a dentist's attention, not a supplement.

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