Ask most people what's in ProDentim and you'll get some version of “three probiotic strains and 3.5 billion CFU.” That's the blend, and it's the part every sales page repeats. What almost nobody mentions is the fourth organism sitting on its own line: Streptococcus salivarius, dosed separately at 20 mg.
Proprietary blends exist so a brand doesn't have to disclose exact per-strain amounts. Streptococcus salivarius isn't hiding in that arrangement here — it gets its own labeled dose. That's either a formulation choice or a labeling requirement we can't fully confirm from the outside, but either way, it means this particular organism is more transparently dosed than the three strains sharing the blend.
Streptococcus salivarius shows up in oral-microbiome literature specifically, not general gut-health research. It's a naturally occurring part of the mouth's bacterial makeup in a lot of people already, which is part of why it gets studied in an oral context rather than a digestive one. That's useful background. It is not the same as a trial showing that taking it in tablet form changes outcomes for the average person — we didn't find that specific study, and we're not going to pretend general strain research closes that gap.
Probably because “3.5 billion CFU across three strains” is a cleaner headline than explaining a fourth ingredient dosed separately for reasons that aren't fully spelled out anywhere public. Simpler summaries spread faster, even when they leave out a real detail. That's not a scandal, just a reminder that the most-repeated version of a fact online isn't always the most complete one.
If you're comparing oral probiotics and one has this strain called out separately while another buries every organism inside one blend, that's a legitimate transparency difference worth factoring in — on its own, it's not a verdict on which product works better.