ProDentim Reviews: 90 Days, 6 Bottles, an Honest Score

By Miles Hartlund, retired school bus mechanic, Portland, OR · Updated October 14, 2026 · 8 min read

Who I am and why I bothered

My name is Miles Hartlund. I fixed school bus engines in Multnomah County for thirty-one years, and the thing nobody tells you about a diesel shop is what the dust does to your mouth. I have had type-2 diabetes since 2017, which the American Academy of Periodontology will tell you is one of the top drivers of gum disease, and by 2024 my hygienist started calling my chart "moderate periodontitis." My gums bled every time I flossed. The dentist wanted me on a three-month recall and said I was heading for scaling and root planing within the year.

So when my brother-in-law sent me a link to the ProDentim order page, I did what any mechanic does: I bought the six-bottle pack, I asked my hygienist to measure me before and after, and I kept notes.

What ProDentim actually is

ProDentim is an oral probiotic chewable. One soft tablet a day, chewed slowly. The ingredient panel lists three strains (Lactobacillus paracasei, Bifidobacterium lactis BL-04, Lactobacillus reuteri) at a total 3.5 billion colony-forming units, plus inulin as the prebiotic, malic acid, tricalcium phosphate, and peppermint. That is a conservative formula compared to some of the twenty-strain gummy sticks sold on Amazon, and I think that is a point in its favor. The National Center for Complementary and Integrative Health has been clear that probiotic research is early and the strain, dose, and condition all matter. You cannot throw thirty strains at your mouth and expect it to behave like a lab study.

What ProDentim is not: a toothpaste, an FDA-approved treatment for gum disease, or a whitening product. Anyone who tells you different is reading the marketing, not the panel. The FDA page on dietary supplements says plainly that supplements are not approved for treating any disease.

How I tested it

Ninety days. Six bottles ordered on July 10, delivered July 15. One tablet every morning after breakfast, chewed slowly like the label says, no water for about half an hour after. Same toothpaste the whole time (a generic sodium fluoride paste from Fred Meyer), same soft brush, same floss, same two-minute timer the American Dental Association recommends, twice a day, no exceptions.

Three things I tracked:

1. My wife's breath score at breakfast, one through five, before I had taken anything that day. I did not tell her for the first fourteen days that I was testing a thing. She noticed anyway in week four and asked.
2. Bleeding on floss, a yes or no, every night. I keep a bus repair log and I used the same shop notebook.
3. The hygienist's measurements at my pre-test cleaning on July 8 and my post-test cleaning on October 7. She charted bleeding on probing (six sites per quadrant, so 24 sites total) and pocket depth. She did not know I was taking anything until I handed her the bottle on October 7.

Pre-test numbers (July 8)

What changed in 90 days

Weeks one and two

Nothing I could swear to. The tablet tastes like a soft mint with a slightly sour edge from the malic acid. It melts in about a minute if you chew it slow. The tablet caused me no gas or stomach trouble, and the aftertaste faded in under a minute. I stopped looking for results and just kept the habit.

Weeks three and four

The first thing was breakfast. My wife has sat across from me every morning for twenty-nine years and she can tell me what I had for dinner yesterday by smell alone. On a Tuesday in early August she looked up from her phone and said my breath had been better all week, and did I switch toothpaste. I had not. From that point her score sat at a four or five almost every morning, where before she was giving me threes.

The flossing changed around the same time. The right-side upper molars stopped bleeding on floss by day 23. The lower-front gaps took longer, which lines up with where my worst pockets are.

Weeks five through twelve

It held. Bleeding on floss dropped from almost every night to maybe one night a week by day 45, and down to a couple of times a month by day 85. I did not change anything else. I had not switched to an electric brush, I had not added a mouthwash, and the interproximal brush my hygienist had been nagging me about for two years was still sitting in a drawer. The only variable in the routine was the chewable.

I had a cold in week seven and ran a low fever for two days. I kept taking the tablet. The cold did not give me a stomach issue or mouth irritation, and nothing shifted once I felt better. That tells me the thing is not just a nocebo. If it only worked when I was in a good mood, the cold would have broken it.

Post-test numbers (October 7)

My hygienist did not have a bone to pick on this. Her exact phrase was "whatever you are doing, keep doing it." She wrote the new numbers on the chart and said my next recall could stretch from three months to four. I will take the win.

What did not change

My pocket depth did not shrink in 90 days. The 5 mm pocket on the lower left is still 5 mm. The NIDCR gum disease page is honest about this: real pocket reduction usually needs scaling and root planing, not a supplement. If you have a 6 mm pocket and you think a mint tablet is going to close it, you are going to be disappointed. ProDentim is a maintenance tool, not a treatment.

My teeth are not whiter. I checked a photo from July against one from October under the same kitchen light. Same color. The malic acid pitch on the sales page is the one thing I would push back on hardest. If whitening is why you are shopping, buy a whitening tray from your dentist and skip the probiotic.

Side effects and who should skip it

I had none. My buddy who ran a shorter test at my suggestion had mild bloating for the first week and it went away. That is the inulin, which the MedlinePlus herb page on inulin notes can cause gas in people who are sensitive.

If you are immunocompromised, on an immunosuppressant, pregnant, or you have a central venous line, do not start any probiotic without your doctor saying so. The NCCIH page on probiotic safety is the right reading on that. For a healthy adult with gum trouble, I did not see a reason to worry.

The price, the refund, and where to actually buy it

Pricing on the official page in October 2026:

The one-bottle pack is a trap. Thirty days is not long enough to judge any oral probiotic. If you are going to try it, buy the three-bottle pack. If your gums are bad, buy the six.

Refund: ClickBank handles billing and refunds. Sixty days from the order date, you can send bottles back and get your money. I did not need to use it, but I had a friend who ordered on my recommendation, decided it was not for him after about forty days, and got his refund in nine business days. The ClickBank return policy is public and it is honored.

Do not buy on Amazon. The listings there are third-party resellers at a markup, or counterfeits with no refund. ProDentim is not sold on Amazon by the manufacturer. Order through the official ProDentim page or do not buy it at all.

Would I buy it again?

Yes. I am on bottle five of six and I already placed another six-pack order to overlap. The breath thing matters to my wife, which means it matters to me, and the fewer bleeding sites at my cleaning is the first real number that moved in two years. I am not going to pretend it reversed my periodontitis, because it did not. I am going to keep brushing twice a day, flossing, and seeing my hygienist four times a year. ProDentim is now part of that routine, not a replacement for any of it.

If your gums bleed and the price does not scare you, try the three-bottle pack and give it a full ninety days. If nothing moves by then, the ClickBank refund has your back and you are out a little time.

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