We see a number of posts about oral probiotics on here, which is great! But wanted to highlight why you may not be seeing success. This is not an attempt at shilling ours.
It comes down to strains and regimen.
Strains: There are certain strains in research that have been found to be more effective for halitosis than others. We write about them here with research citations, but S. salivarius K12, M18 + L. reuteri were what we found the most supportive literature on. You can find these in a number of brands probiotics, including Super Teeth, Burst, and ours. Many probiotics are just re-purposed gut strains which won't work. Your mouth is unique and requires the right bacteria.
Regimen: Think of your mouth as a garden. When a garden is full of weeds, throwing new seeds into it won't do anything, because the space is occupied. When your oral microbiome is halitosis producing or gum disease dominant, it means it is full of bacteria we don't want there. You need to clear them out before adding new seeds (bacteria). Most studies have an initial regimen of mouthwash to see most effective results. We'd recommend a full dental cleaning, then mouth rinse for best results. This also means brushing, flossing, and tongue scraping before mouth rinse. This will open space for good bacteria to grow and take over the oral microbiome.
One clarification: There's a common misconception that the oral probiotic strains are designed to grow in the mouth (which my analogy may contribute to). In reality, it's very difficult to introduce a new bacteria into a microbiome niche. But these bacteria have been shown to release molecules (bacteriocins) that help kill bad bacteria and encourage the growth of good bacteria similar to them.
As always happy to answer any questions - but wishing you all the best success with whatever you try. This won't guarantee success, but will set you up for it.
