Ingredient 3 of 7
B. lactis BL-04 in ProDentim: The Only Strain With a Code
B. lactis BL-04 is a named probiotic strain and the third one listed for ProDentim. Unlike the other two, it carries a strain code. Its main trial looked at colds and respiratory illness in active adults, not at teeth or gums, so it supports the throat line of the label at best, and no trial tested the tablet.
Written by the ProDentim label teamUpdated
What is B. lactis BL-04?
B. lactis BL-04 is a strain of Bifidobacterium animalis subsp. lactis. It is the third strain on the sales page list, and the only one with a code (ProDentim sales page).
That code is useful. It lets a reader look for trials of this exact strain, which is how probiotic research should be read (Hill et al. 2014, ISAPP consensus).
Bifidobacteria usually live in the gut. That is a different home from the mouth, and a reason to be careful with the claims.
The sales page gives no amount for BL-04, only "3.5 billion" for all three strains together.
What does the sales page say about B. lactis BL-04?
Three lines sit beside it: "Supports the balance of mouth bacteria", "Supports respiratory tract" and "Maintains a healthy immune system" (ProDentim sales page).
The first is about the mouth. The other two are about breathing and immunity, which matches the label line "Ear, Nose and Throat Immune Health".
None of the three comes with a named study on the page.
The label front carries only the claim bullets. It does not list this strain.
The round picture is a brand illustration. The file does not say it shows BL-04.
What are the B. lactis BL-04 facts at a glance?
The table gives the name, the list position, the amount and how strong the evidence is.
A cell marked "Not printed" means neither the label images nor the sales page gave a figure.
| Name on the sales page | B. lactis BL-04 |
|---|---|
| What it is | Bifidobacterium animalis subsp. lactis, strain BL-04 |
| Place on the sales page list | 3 of 7 |
| Amount per tablet | Not printed (3.5 billion in total for the three strains) |
| What research looked at | BL-04 in adult trials of respiratory illness and immune markers, mostly with a partner strain; not teeth |
| Strength of evidence | Studied for respiratory and immune outcomes, not for teeth |
| Marketed or traditional use | Named probiotic strain |
| Main caution | People with weakened immunity or serious illness should ask a clinician first. |
| Sales page says | “Supports the balance of mouth bacteria; Supports respiratory tract; Maintains a healthy immune system” |
What have trials of B. lactis BL-04 found?
The main trial found fewer upper respiratory illnesses with BL-04 than with placebo in active adults. It did not look at teeth or gums.
It enrolled 465 healthy, physically active adults. One group took BL-04, another took a two-strain mix, and a third took placebo. Only the BL-04 group had lower illness risk than placebo (West 2014, B. lactis Bl-04 & URTI).
Some authors worked for the company that supplies the strain. That does not cancel the result, but it is worth knowing.
| Question | Answer |
|---|---|
| Who took part? | 465 healthy, active adults (West 2014, B. lactis Bl-04 & URTI) |
| What was measured? | Upper respiratory illness, not oral health |
| Did BL-04 beat placebo? | Yes, for respiratory illness risk; the two-strain mix did not |
| Was it ProDentim? | No; a different product, form and dose |
| Teeth or gums tested? | No |
A wider Cochrane review found probiotics likely cut the number of people with three or more upper respiratory infections, with moderate certainty, and may do more with low certainty (Cochrane 2022, probiotics & URTI). It was not about oral health and covered many strains.
ProDentim: from $49 a bottle30 soft tablets · one a day · free US shipping on 3 or 6 · 60-day money-back guarantee
See packsWhat is not known about B. lactis BL-04 in ProDentim?
The dose per tablet is the biggest gap. The trial used a set daily dose, and ProDentim prints no figure to compare with it.
No Supplement Facts panel was in the label images No Supplement Facts panel is in the images supplied. The sales page names three probiotic strains (3.5 billion in total) and a 'Proprietary Blend of 4 Plants and Minerals'; per-strain amounts, blend weights and other ingredients are not printed there..
- Amount of BL-04 per tablet: not printed.
- Whether the dose matches the trial dose: cannot be checked.
- Any benefit for teeth or gums from BL-04: no trial found.
- A trial of the finished tablet: none found.
So the strain code is a good sign for transparency, yet it does not turn the tablet into a tested product.
Is B. lactis BL-04 safe to take?
For most healthy adults, probiotics have a low risk. Reviews report mostly minor stomach effects (Cochrane 2022, probiotics & URTI).
Rare serious infections have been reported in people with weak immunity or severe illness (Costa 2018, probiotic infections SR). The NIH and NCCIH advise asking a clinician first if that applies to you, or if you are pregnant or take antibiotics (NIH ODS, Probiotics (HP)) (NCCIH, Probiotics: Usefulness & Safety).
You have a weak immune system, a serious illness, or you are pregnant, nursing, or under 18. Show the tub to your doctor or pharmacist.
- Bleeding gumsThat keep bleeding when you brush or floss
- A loose toothOr teeth that seem to be shifting
- Toothache or swellingPain, a bump on the gum or a swollen face
- Breath that will not goEven with brushing, flossing and a clean tongue
- White or dark spotsEarly signs of decay can look like chalky spots
Book a visitThese are reasons to see a dentist, not to try a supplement. Tell the dentist about every supplement and medicine you take.
Urgent careA swollen face or neck, trouble swallowing or breathing, or a fever with mouth pain needs urgent medical care. Call your doctor or local emergency number.
Signs from NIDCR (NIDCR, Gum Disease) (NIDCR, The Tooth Decay Process) and MedlinePlus (MedlinePlus, Bad Breath). A probiotic is not a treatment for any of them.
How does B. lactis BL-04 fit with your daily care?
It sits on top of your usual care, never in place of it. The sales page says to slowly chew one tablet every morning (ProDentim sales page).
Keep brushing twice a day with fluoride toothpaste (ADA MouthHealthy, Brushing Your Teeth), clean between your teeth daily (ADA MouthHealthy, Flossing), see your dentist and keep taking prescribed medicine as directed.
A cold or sore throat that keeps coming back needs a clinician, not another supplement. See the ProDentim benefits page for each claim next to its evidence.
The next line is inulin, the first of the four blend items.
FAQ01
B. lactis BL-04 questions
What does BL-04 stand for?
BL-04 is a strain code that tells researchers exactly which isolate of Bifidobacterium animalis subsp. lactis was used. It is the only code ProDentim's sales page gives, which is why trials of BL-04 can be looked up and the other two strains cannot.
Does B. lactis BL-04 help your gums?
No evidence of that was found. The main BL-04 trial looked at respiratory illness (West 2014, B. lactis Bl-04 & URTI). The sales page line "Supports the balance of mouth bacteria" has no named study behind it.
Does B. lactis BL-04 prevent colds?
Not as a promise. One trial in active adults found a lower risk of upper respiratory illness with BL-04 (West 2014, B. lactis Bl-04 & URTI). It was a different product, and ProDentim has not been tested. Handwashing and sleep still matter.
Is B. lactis BL-04 the same as Bifidobacterium lactis BB-12?
No. BB-12 is another strain with its own research. A student trial often mixed up with BL-04 used a different pair. Always match the strain code before you trust a study.
How much B. lactis BL-04 is in each ProDentim tablet?
Not printed. The sales page lists "3.5 billion" for three strains and splits nothing out. Without a Supplement Facts panel, no one can say whether it matches the dose in any trial.
Why would a gut bacterium be in a mouth product?
The sales page gives no reason. Bifidobacteria mainly live in the gut, and the research on BL-04 is about breathing and immunity. Any mouth role is a claim without a named test.
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, NIDCR, FDA, CDC, ADA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a USA authorized ProDentim retailer, not by the manufacturer. We earn money when you buy through our order links.
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