"Ozempic Teeth": What Happened to Mine, and What I Changed

Cold water started hurting

Month three, standing at the sink after the school run, and a mouthful of cold tap water went straight through a back tooth like a wire. I had never had a sensitive tooth in my life. I assumed it was a cavity and booked in, half convinced I was about to be told off.

"Ozempic teeth" is another name the internet invented before anyone explained it. Here is what I actually found when I went looking, including the bit that surprised me.

What is on the label, and what is not

Both halves of this matter, so I checked the current prescribing information myself rather than trusting a headline.

On the label, with numbers: vomiting affected 24% of people on Wegovy 2.4 mg versus 6% on placebo, and gastresophageal reflux disease 5% versus 3%¹. Roughly one in four, throwing up, in a trial.

Not on the label at all: the words dental, tooth, and dry mouth. None of them appear anywhere in it¹.

So the honest position is that no regulator has recognized a dental effect of this medication, and I am not going to pretend otherwise. What is recognized — loudly, with percentages — is a lot more acid arriving in a lot of mouths.

The mechanism is acid, not the drug

This is the part that reframed it for me, because it means the thing to manage is not mysterious.

Stomach acid dissolves enamel. That is not new, GLP-1-specific, or controversial; it is the whole category of what dentistry calls erosive tooth wear. A 2024 systematic review and meta-analysis of risk factors in adult teeth found regurgitation carried roughly double the odds of erosive tooth wear (odds ratio 2.27), with digestive disorders also significantly associated². The European Federation of Conservative Dentistry's consensus report names reflux and vomiting outright among the patient-related causes, and is emphatic that management is preventive first — restorative work only alongside prevention, never instead of it³.

Put those next to a 24% vomiting rate and you do not need a study on GLP-1s and teeth to see the shape of it. My tooth was not reacting to semaglutide. It was reacting to what semaglutide was doing to my stomach on dose-increase weeks.

That mechanism is also why the burps get their own explanation and their own page — sulfur burps share a plumbing problem with this one.

The bit I had wrong

I had absorbed, from somewhere, the rule that you must never brush after being sick and should just rinse. So I stopped brushing on bad mornings, felt virtuous, and assumed I was protecting something.

Then I read an in-situ study that tested exactly this: whether rinsing with a fluoride and stannous solution before or after brushing changed the outcome. The order made no difference — and the arms that brushed with the fluoride/stannous toothpaste showed less enamel surface loss than brushing with no toothpaste at all⁴.

It is a small study, fifteen people, done on specimens in removable appliances rather than on real molars over years, and I would not build a religion on it. But it was enough to stop me skipping toothpaste and calling that dental care.

The four things I actually changed

I told my dentist what I was taking. Not as a confession — as information. It changes what she is looking for and how often she wants to see me, and I had not thought to mention a weight medication at a dental appointment.

I rinsed with plain water straight after being sick, and used fluoride toothpaste properly the rest of the time. Rinsing costs nothing. Skipping toothpaste, on the evidence I could find, buys nothing.

I stopped sipping. The nausea had me nursing fizzy water and lemon squash all day, which is an acid drip on top of an acid problem, and it is the one habit I could actually delete.

I raised the reflux instead of tolerating it. Two years of quiet heartburn is not a personality trait, and it is treatable. That was one conversation.

The honest bit

There is no trial on GLP-1s and enamel. There is no number I can give you for how many women this happens to, because nobody has counted. What exists is a well-established link between stomach acid and tooth wear, and a label that reports a lot of vomiting.

If cold water hurts, or a tooth edge feels newly thin or notched, that is a dentist, not a forum. Sensitivity that arrives suddenly can be several things and only one of them is enamel.

Where this left me

It was not a cavity. It was wear, caught early, and the plan was boring: fluoride, fewer acid drinks, deal with the reflux, come back in six months.

I would rather have known in month one than found out in month three with a mouthful of cold water.