Nobody sells you a drug by telling you about your teeth. This is a small effect with a long tail, and it belongs in the same list as everything else a product page leaves out.
What the review found
A narrative review pulled clinical trials, pharmacovigilance analyses, observational studies, case reports and laboratory work on semaglutide and the mouth. [1] Dry mouth, medically xerostomia or hyposalivation, is the effect reported most consistently.
Alongside it: altered taste, dry throat, numbness or reduced sensation in the mouth, bad breath, frothy saliva and more dental caries. Reporting systems show clear signals for dry mouth and taste change. Case series confirm reduced saliva. Limited evidence points to more oral thrush.
The number that is not there
How often does this happen? The review does not say. It reports that prevalence varies across studies and declines to pool them.
That is an honest limitation of a narrative review, which synthesizes literature rather than combining it statistically. It also means nobody reading this can put a figure on their own odds.
Taste is the one people notice
Altered taste shows up in the pharmacovigilance data as a distinct signal, separate from dry mouth.
That effect has been described from the other end too, by people who found food stopped tasting like anything. Some of that is appetite. Some of it, according to this review, is the mouth.
Where the cost lands
More cavities means more dental work, and dental work is billed by a dentist. No subscription on this roster covers it, and no price page mentions the possibility.
That is not an accusation of concealment. It is the ordinary shape of what a seller publishes against what a buyer eventually pays, and it is the kind of unanswered question this site keeps a list of.
What to do with it
Mention the drug at your next dental appointment. That is the whole recommendation.
The review’s own conclusion is that oral health monitoring should be part of care for people on these drugs, which is a request aimed at clinicians rather than at patients. Telling your dentist is the part you control.