Last updated: September 2026. Written and reviewed by the Dentists Closeby editorial team. Sources: NHS.uk, NICE (Clinical Guideline CG64), NHSBSA, SDCEP and the British Dental Journal.
TL;DR Most people do not need antibiotics before dental treatment in the UK. Since 2024, however, the guidance has changed for a defined highest-risk group with certain heart conditions, who may now be advised to take a single preventive dose before extractions or oral surgery. Only your dentist and cardiologist can decide whether this applies to you.
If you have a heart condition or a replacement joint, you may have been told years ago either that you always need antibiotics before the dentist, or that you never do. Both messages are now out of date. The UK position shifted in 2024 and again in 2026, and it is more nuanced than a simple yes or no. This guide explains the current rules in plain terms, who they affect, and why the safest step is always to talk it through with your own dentist and specialist.
Do you need antibiotics before dental treatment?
For most patients, the answer is no. The core UK position, set by the National Institute for Health and Care Excellence (NICE) in Clinical Guideline CG64, remains that routine antibiotic cover before dental work is not needed for the general population [2]. The exact wording that dentists work to is this:
"Antibiotic prophylaxis against infective endocarditis is not recommended routinely for people undergoing dental procedures."
That single sentence has shaped UK dental practice since 2008 [2][8]. The important word, added when NICE reviewed the guideline in 2016, is routinely. It signals that while cover is not given as a matter of course, there are individual cases where it may be appropriate [8]. Working out whether you are one of those cases is a clinical decision, not something to judge from a symptom checker or an old leaflet.
"Prophylaxis" simply means a preventive measure. Antibiotic prophylaxis before dental treatment is a single dose of antibiotic, taken shortly before an invasive procedure, intended to reduce the risk of a serious heart infection called infective endocarditis. It is given to a well patient as a precaution. It is not the same as a course of antibiotics used to treat an active dental infection or abscess, which is a separate situation with separate advice.
What changed in 2024 and 2026
The UK guidance on antibiotic cover has moved twice in quick succession, after 16 years of stability. Anyone who was told "you do not need antibiotics any more" some years ago should treat that as information that may have dated.
The trigger was a coroner's report in April 2024, following the death of a patient in England from infective endocarditis after a dental extraction, where preventive antibiotics had not been given [9]. The coroner asked NICE to review CG64. NICE's review concluded that the underlying position did not need rewriting, but that the guideline should point clinicians more clearly toward specialist implementation advice for patients at increased risk [17].
In late 2024, NICE amended CG64 to direct dentists, other clinicians and patients to the implementation advice produced by the Scottish Dental Clinical Effectiveness Programme (SDCEP), and confirmed that this advice applies across the whole of the UK, not only Scotland [9][17]. In March 2026, SDCEP published a fully updated second edition of that advice, endorsed by NICE, the four UK Chief Dental Officers and major UK cardiac bodies [3]. For a specifically defined highest-risk group, it now recommends antibiotic cover before extractions and oral surgery, rather than merely leaving it as an option [3][4].
This is why the story is no longer a flat "no". The UK now has a stratified position: no routine cover for most people, but a clear recommendation for a small, defined highest-risk group.
What antibiotic prophylaxis is, and what it is not
Antibiotic prophylaxis before dental treatment is preventive, not curative. The goal is to reduce the chance that bacteria stirred up during an invasive procedure settle on a vulnerable part of the heart and cause infective endocarditis. It has nothing to do with treating toothache, an abscess or gum infection you already have.
One reason NICE was cautious for so long is that bacteria briefly enter the bloodstream during everyday activities too. Ordinary toothbrushing, flossing and chewing all cause small, frequent surges of oral bacteria into the blood, arguably adding up to far more exposure over time than a single dental appointment [8]. That observation raised a genuine question about how much a one-off preventive dose around a dental visit could really achieve, and it is part of why good daily oral hygiene matters so much for people at cardiac risk.
Because prophylaxis is a prescription-only, precisely timed, single dose for a well patient, it is not something to buy online, take "just in case", or self-administer on your own schedule. Unnecessary antibiotics carry real risks of their own, including allergic reactions and antibiotic resistance.
Heart conditions: who is now advised to have antibiotic cover
The current SDCEP advice splits cardiac patients into a highest-risk group and a moderate-risk group. The distinction matters, because only the highest-risk group is now covered by a recommendation for antibiotics before certain dental procedures [4][5]. Crucially, deciding which group you are in is a clinical judgement made with a cardiologist or specialist, not something to self-diagnose from the lists below.
Highest-risk conditions, where prophylaxis is now recommended
SDCEP lists the highest-risk group as people with [4]:
- A previous episode of infective endocarditis
- Surgically implanted prosthetic (replacement) heart valves, or any material used for surgical heart valve repair
- Transcatheter implanted aortic and pulmonary valve replacements
- Untreated cyanotic congenital heart disease
- Cyanotic congenital heart disease treated with surgery or transcatheter procedures that leave post-operative shunts, conduits or other prostheses
- Ventricular assist devices
For this group, antibiotic cover is recommended before extractions and oral surgery, and should be considered before other procedures that disturb the gums or the tissue around the tooth root [4][7].
Moderate-risk conditions, where routine cover is not recommended
SDCEP places these conditions in the moderate-risk group, for whom routine antibiotic prophylaxis is not recommended [5]:
- Rheumatic heart disease
- Non-rheumatic degenerative valve disease
- Congenital valve abnormalities, including bicuspid aortic valve disease
- Cardiovascular implanted electronic devices, such as pacemakers and defibrillators
- Hypertrophic cardiomyopathy
SDCEP notes that cover may still be considered case by case for a moderate-risk patient who has additional complicating factors, such as diabetes or a suppressed immune system [5]. That is precisely the kind of decision that needs your cardiologist and dentist, working from your notes, rather than a general rule.
Prosthetic joint replacements: hip and knee
If your only reason for asking about antibiotics is a hip or knee replacement, current UK evidence points the other way. Routine antibiotic prophylaxis before dental treatment is not recommended purely because a patient has a prosthetic joint.
A large English study of prosthetic joint infections found no timing link between invasive dental procedures and later joint infections. Its authors were direct about the implication:
"These findings refute recommendations to give antibiotic prophylaxis to patients with prosthetic joints prior to invasive dental procedures, given the cost, adverse drug reaction risk, and potential for promoting antibiotic resistance."
That conclusion is quoted from the study directly [13]. No current UK national guideline recommends routine antibiotics before dental work solely on the basis of a replacement joint.
This matters because many people who had joint surgery years ago were told by a surgeon, or an older leaflet, that they would need antibiotics for life before any dental treatment. That advice is now considered out of date in the UK. If you are still being told it, raise it specifically with your dentist and orthopaedic team rather than self-medicating. In rare cases involving complex or recently revised joints, a surgeon may have an individual reason for a different view, which is exactly why it stays a shared decision rather than a blanket rule.
Which dental procedures count as "at risk"
Not every dental visit is treated the same way. The recommendation is strongest for procedures most likely to disturb bacteria around the tooth. SDCEP groups the procedures for highest-risk patients as follows [7].
| Procedure group | Examples | Position for highest-risk patients |
|---|---|---|
| Extractions and oral surgery | Tooth extractions, drainage of an abscess, oral, periodontal and endodontic surgery, placing dental implants | Antibiotic cover recommended |
| Manipulation of the gum or root area | Scaling and mechanical plaque removal, periodontal charting, subgingival fillings and crowns, placing orthodontic bands, early-stage root canal treatment | Antibiotic cover should be considered |
SDCEP explains the split by pointing to a review that found a significant association between extractions or oral surgery and infective endocarditis in high-risk patients, but no significant association for procedures such as root canal treatment or scaling [7]. A routine check-up or a simple filling that does not reach below the gumline generally falls outside the "at risk" list, even for highest-risk patients, though your dentist will make the call for your specific treatment.
What antibiotic is given, and at what dose
When prophylaxis is indicated, current SDCEP guidance sets out a single oral dose taken shortly before the procedure [6]. This is included here so you understand what your dentist is working to, not as a prescription. Only a dentist or doctor can prescribe it, and only after checking your history and allergies.
| Situation | Antibiotic and dose (single oral dose, 30 to 60 minutes before) |
|---|---|
| No penicillin allergy | Amoxicillin 2 g (four 500 mg capsules), or a 3 g oral powder sachet |
| Penicillin allergy | Clarithromycin 500 mg, or azithromycin 500 mg |
There is an important change to note. Clindamycin has been removed from the recommended UK regimens. SDCEP explains that clindamycin is no longer advised because of the increased risk of adverse effects, mainly Clostridioides difficile infection [6]. Older patient information, allergy cards or leaflets may still mention a clindamycin dose for penicillin-allergic patients. If yours does, treat it as out of date and check with your dentist or pharmacist rather than acting on it.
Infective endocarditis, and why the UK was cautious for so long
Infective endocarditis is the infection all of this is trying to prevent. The NHS describes it as inflammation of the inner lining of the heart, usually caused by an infection, and as rare but potentially life-threatening if it is not found and treated early [1]. Symptoms can include a high fever, night sweats, extreme tiredness, aching joints or muscles and breathlessness, and can develop over days to months [1].
The condition is serious when it strikes. It carries around a 30% risk of death in the first year after diagnosis, according to figures widely cited across UK dental and cardiology literature [11]. An estimated 30 to 40% of cases are caused by bacteria that originate in the mouth [12], which is why dental procedures have long been part of the prevention conversation.
The reason NICE moved away from routine cover in 2008 was a lack of trial evidence that it worked, combined with the risks of unnecessary antibiotics [8]. That decision has been debated ever since. One influential analysis found that antibiotic prophylaxis prescribing in England fell by 88% after the 2008 guidance, from around 10,900 prescriptions a month to about 2,236 a month, alongside a rise in infective endocarditis cases [10]. Whether the fall in prescribing specifically caused the rise, or whether other factors such as an ageing population and more people living with prosthetic valves were responsible, remains genuinely debated in the research [10]. The 2024 and 2026 policy changes are best understood as a practical response to that debate, restoring cover for the group judged most vulnerable, rather than as a final scientific verdict.
What it costs on the NHS
Antibiotic prophylaxis is not usually a separate bill. Where it is given as part of a wider course of NHS treatment, such as an extraction, it generally sits within that course's band charge rather than being billed on top. NHS dental treatment in England is charged in bands, and you pay only the highest band that applies to your course of treatment [14].
| Band | Charge (from 1 April 2026) | What it covers |
|---|---|---|
| Band 1 | £27.90 | Examination, diagnosis, X-rays, advice, scale and polish if clinically needed |
| Band 2 | £76.60 | Everything in Band 1, plus fillings, root canal treatment and extractions |
| Band 3 | £332.10 | Everything in Bands 1 and 2, plus crowns, dentures and bridges |
If a dentist issues a prescription on its own rather than giving the dose in the surgery, the prescription itself does not carry a dental band charge, though a standard pharmacy prescription charge may apply when it is dispensed, unless you are exempt [16]. NHS dental charges also differ across the four UK nations, so figures above are for England, while the SDCEP clinical advice on prophylaxis applies UK-wide [3].
Many people pay nothing for NHS dental care at all. You qualify for free NHS dental treatment if you are under 18, or under 19 and in full-time education, pregnant or have had a baby in the last 12 months, or if you or your partner receive certain benefits such as Universal Credit within the qualifying thresholds, Pension Credit Guarantee Credit or income-related Employment and Support Allowance [15]. Holding a valid HC2 certificate through the NHS Low Income Scheme also gives full help with costs [15]. For a fuller breakdown, see our guide to free NHS dental treatment and who qualifies.
What to do before your dental appointment
The single most useful thing you can do is make sure your dental team knows your medical history. Prophylaxis only works when the dentist knows it might be needed.
- Tell the practice about your heart condition or prosthetic joint when you book, and again at the appointment. Mention any heart valve problem, a replacement valve, a previous episode of infective endocarditis, congenital heart disease or a joint replacement, and always mention a penicillin or other drug allergy [3].
- Bring any specialist letter about your heart condition. SDCEP expects cardiologists to give highest-risk patients a summary letter precisely so it can be shown to the dentist [3].
- Ask again if your advice is old. If you were told years ago either that you never need antibiotics, or that you always do, ask your cardiologist or specialist to confirm what applies now, because the guidance has genuinely changed [3].
- Do not self-medicate or change your medication. Never source antibiotics without a prescription, and do not stop or start any regular medicine around a dental visit without checking first.
- Know the warning signs. If you develop a high fever, night sweats, unusual tiredness, aching joints or breathlessness in the weeks after dental treatment, seek medical advice promptly, particularly if you have a known heart condition [1].
The same clinical rules apply whether your treatment is on the NHS or private. Prophylaxis is a health decision based on your heart, not on how you pay. If you need to find a practice, you can search for a dentist near you on Dentists Closeby.
Frequently asked questions
Do I need antibiotics before dental treatment if I have a heart murmur?
Not routinely. A simple heart murmur or a common valve condition such as bicuspid aortic valve disease sits in the moderate-risk category, for which routine antibiotic cover is not recommended in the UK. Confirm your specific diagnosis and risk category with your cardiologist rather than assuming it from a general description.
Will I need antibiotics before a filling or check-up with a heart valve replacement?
Often not for a routine check-up or a simple filling, but cover is recommended before extractions and oral surgery, and should be considered for procedures that disturb the gums or tooth root, if you have a replacement or transcatheter heart valve. It is a shared decision made with your dentist and cardiologist based on the exact procedure.
Do I need antibiotics before dental work if I have had a hip or knee replacement?
Current UK evidence and guidance say routine antibiotic cover is not recommended for dental treatment purely because of a prosthetic joint. A large English study found no link between invasive dental procedures and later joint infections. If an orthopaedic surgeon told you otherwise years ago, raise it directly with your dentist and orthopaedic team.
What antibiotic and dose is used before dental treatment in the UK?
Where prophylaxis is indicated, SDCEP guidance specifies a single oral dose of amoxicillin 2 g, or a 3 g sachet, taken 30 to 60 minutes before the procedure. For people allergic to penicillin, the alternative is a single 500 mg dose of clarithromycin or azithromycin. Clindamycin is no longer recommended, and the dose must be prescribed by a dentist or doctor.
Why did the NHS stop giving antibiotics before dental treatment?
In 2008, NICE concluded there was not enough trial evidence that antibiotic cover prevented infective endocarditis, and that unnecessary antibiotics carried their own risks, so it advised against routine use. This was refined in 2016, then updated again in 2024 and 2026 to recommend cover once more for a defined highest-risk cardiac group.
Do I need antibiotics before dental treatment for a pacemaker?
No. SDCEP classes cardiovascular implanted electronic devices, including pacemakers and defibrillators, as moderate risk, for which routine antibiotic prophylaxis before dental treatment is not recommended. As with any cardiac condition, confirm your own risk category with the specialist who manages your device.
Does the NHS charge extra for antibiotics before dental treatment?
Issuing a prescription on its own does not carry a separate NHS dental band charge, though a standard pharmacy charge may apply when it is dispensed unless you are exempt. Where cover is given as part of a wider course such as an extraction, it is generally included within that course's band charge, from £27.90 to £332.10 in England from April 2026.
What are the symptoms of infective endocarditis after dental treatment?
The NHS lists a high fever, headaches, extreme tiredness, aching joints or muscles, night sweats, breathlessness and loss of appetite, developing over days to months. Anyone with a known heart condition who notices these signs in the weeks after dental treatment should seek medical advice promptly, as endocarditis is rare but potentially life-threatening if untreated.
Conclusion
The old rule of thumb, that nobody needs antibiotics before the dentist any more, is no longer the whole story. Most people still do not, but the UK now recommends antibiotic cover for a small, clearly defined group of highest-risk heart patients before extractions and oral surgery, following the 2024 and 2026 updates. Prosthetic joints, by contrast, are not a reason for routine cover. The right answer for you depends on your heart, your history and the exact procedure, which is why it is always a conversation with your dentist and cardiologist rather than a fixed rule.
If it has been a while since anyone reviewed your risk, make your next dental visit the moment to check. Search for a dentist near you on Dentists Closeby and tell the practice about your heart condition, prosthetic joint or allergy when you book. For related reading, see our guides to the cost of a tooth extraction, dental implant costs and the procedure, gum disease treatment, how NHS dental charges work and how to find a good dentist.
Sources
- Endocarditis -- NHS.uk, last reviewed 16 February 2026, accessed 2026-09-16
- Prophylaxis against infective endocarditis (CG64) -- National Institute for Health and Care Excellence, accessed 2026-09-16
- Antibiotic Prophylaxis Against Infective Endocarditis, Implementation Advice, 2nd edition -- Scottish Dental Clinical Effectiveness Programme, published March 2026, accessed 2026-09-16
- High risk patients -- SDCEP, accessed 2026-09-16
- Moderate risk patients -- SDCEP, accessed 2026-09-16
- Oral antibiotic prophylaxis regimens -- SDCEP, accessed 2026-09-16
- At-risk dental procedures -- SDCEP, accessed 2026-09-16
- A change in the NICE guidelines on antibiotic prophylaxis -- British Dental Journal 2016; 221: 82-83, accessed 2026-09-16
- An important change in infective endocarditis prevention guidance -- British Dental Journal (2026), accessed 2026-09-16
- Incidence of infective endocarditis in England, 2000-13: a secular trend, interrupted time-series analysis -- Dayer et al., The Lancet 2015; 385: 1219-1228, accessed 2026-09-16
- Cahill TJ, Prendergast BD. Infective endocarditis. The Lancet 2015; 387: 882-893, cited via British Dental Journal (2026), accessed 2026-09-16
- Thornhill MH et al. Antibiotic prophylaxis against infective endocarditis before invasive dental procedures. Journal of the American College of Cardiology 2022; 80: 1029-1041, cited via British Dental Journal (2026), accessed 2026-09-16
- Analysis of Prosthetic Joint Infections Following Invasive Dental Procedures in England -- accessed 2026-09-16
- How much will I pay for NHS dental treatment? -- NHS.uk, accessed 2026-09-16
- Who can get free NHS dental treatment or help with dental costs -- NHS.uk, accessed 2026-09-16
- Which courses of treatment are charge exempt? -- NHS Business Services Authority, accessed 2026-09-16
- 2024 exceptional surveillance of prophylaxis against infective endocarditis (CG64) -- NICE, accessed 2026-09-16
