Where teeth appear, and do not appear, in the documents
Saxenda® information is silent on teeth and gums. [1][2][3] The closest entries are reactions that affect the mouth indirectly, and one entry belongs to Victoza®, which contains the same active ingredient but is approved for type 2 diabetes at lower doses. [4] Victoza® data cannot simply be carried over to the 3 mg Saxenda® dose for weight management, but they are the only label data on teeth for liraglutide.
| Entry | Saxenda® | Placebo | Document |
|---|---|---|---|
| Vomiting, adults | 15.7% | 3.9% | Saxenda® US Table 2 [1] |
| Vomiting, ages 12–17 | 34.4% | 4% | Saxenda® US Table 3 [1] |
| Reflux (GERD) | 4.7% | 1.7% | Saxenda® US Table 2; EU: common [1][2] |
| Indigestion | 9.6% | 2.7% | Saxenda® US Table 2 [1] |
| Dry mouth | 2.3% | 1% | Saxenda® US Table 2; EU: common [1][2] |
| Tooth, gum or dental entry | None | — | All three Saxenda® documents [1][2][3] |
| Toothache | Common (Victoza®, type 2 diabetes) | — | Victoza® EU SmPC and leaflet [4] |
What the research says so far
A 2026 narrative review of oral health on incretin medicines, including liraglutide, describes a cluster of complaints about teeth and mouth that patients now raise with dentists. It ties them to nausea, vomiting, burping, drinking less and possible changes in saliva, while warning that human data with measured oral outcomes are scarce and much of the evidence is indirect or from case reports. [5]
Looking at gums from the other direction, a 2025 review of GLP-1 medicines in type 2 diabetes gathered 10 laboratory studies, 9 animal studies and a single human study. Lab and animal work, some with liraglutide, suggested less gum inflammation and bone loss, and the one retrospective human study found less bone loss around dental implants in people on GLP-1 medicines than on insulin or metformin. [6] That is early, mostly non-human evidence, and none of it comes from Saxenda® trials.
How Saxenda® reactions can affect teeth
- Stomach acid: Cleveland Clinic lists reflux and repeated exposure to stomach acid, as in bulimia, among causes of enamel erosion, which leaves teeth thin, sensitive and easier to decay. [10] On Saxenda®, vomiting and reflux are both more frequent than on placebo. [1]
- Less saliva: dry mouth is listed for Saxenda®. NIDCR explains that saliva and fluoride help enamel repair early damage, and that a lasting dry mouth raises the risk of decay. [1][7][8]
- Teen mouths: vomiting was especially common in the adolescent trial, so teens on Saxenda® may be the group where enamel protection matters most. [1]
- Toothache with the same molecule: the Victoza® entry comes from diabetes trials, and its cause is not explained. [4]
Things that matter more for most mouths
NIDCR names smoking and tobacco as the strongest risk factor for gum disease, with older age, diabetes, genetics, stress and hormonal changes also playing a part; obesity and the medicines used for some long-term conditions are associated too. [9] Tooth decay starts when bacteria turn sugars and starches into acid, and frequent sugary snacks and drinks keep that process going. [8]
Diabetes deserves a mention because 15% of adults in the Saxenda® trials had type 2 diabetes. [1] NIDCR lists diabetes among the risk factors for gum disease, and the 2025 review describes the link as two-way, with poorly managed diabetes raising inflammation and implant failure. [6][9]
Protecting your teeth on a daily injection
NIDCR advises brushing twice a day with fluoride toothpaste, cleaning between teeth with floss or another interdental cleaner, using fluoride from tap water or a rinse, limiting sugary drinks and frequent snacking, avoiding tobacco and having regular check-ups. [8][9] Early decay, seen as a white spot before a hole forms, can be stopped or reversed with fluoride. [8] After eating, Cleveland Clinic suggests waiting at least 30 minutes before brushing so saliva can clear acids first. [10] For a dry mouth, NIDCR suggests drinking plenty of water and chewing sugarless gum or sucking sugarless hard candy to get saliva flowing. [7]
For Saxenda® specifically, the Medication Guide asks you to report nausea, vomiting or diarrhoea that does not go away and stomach problems that are severe or persistent. [1] Frequent vomiting is worth raising with your prescriber, not only for your teeth. If your dentist plans sedation, the Saxenda® label asks you to tell every provider about the medicine beforehand, because slowed stomach emptying has been linked with rare cases of stomach contents reaching the lungs during deep sedation or general anaesthesia. [1][3]
Saxenda® and Victoza® are registered trademarks of Novo Nordisk A/S. PepLabo is not affiliated with or endorsed by Novo Nordisk.
When to get help
The signs and contact information below come from this article’s sourced guidance.
Emergency
- Sudden swelling of the lips, tongue or throat with difficulty swallowing or breathing
Contact: Emergency services (911 / 112); stop Saxenda®
Medication Guide [1]
Today
- Vomiting that keeps returning or will not stop
Contact: Your prescriber
Medication Guide [1]
At your next appointment
- Planned dental work under deep sedation or general anaesthesia
Contact: Your dentist and prescriber, before the appointment
- New sensitivity to heat, cold or sweets, chips, pitting or discoloured teeth
Contact: Your dentist
Cleveland Clinic [10]
- Red, swollen or bleeding gums, or loose teeth
Contact: Your dentist
NIDCR [9]