Last updated: July 2026. Sources: NHS.uk, NHSBSA, NHS England, the Scottish Dental Clinical Effectiveness Programme (SDCEP), the General Dental Council (GDC), the UK Health Security Agency (UKHSA), and the devolved health administrations. All prices and guidance verified as of July 2026.
TL;DR: Antibiotics do not cure a tooth infection. They can slow a spreading infection and buy you time, but the infection only clears once a dentist removes its source, usually by draining an abscess, carrying out root canal treatment, or taking the tooth out. You cannot get them from a pharmacy for toothache anywhere in the UK.
If you are in pain, cannot get a dental appointment, and are wondering whether a course of antibiotics would sort it out, this guide gives you the honest answer. It covers what UK dentists actually prescribe, the strict circumstances in which guidance says antibiotics are appropriate, who is allowed to prescribe them, what urgent NHS dental treatment costs across the four UK nations, and the symptoms that mean you should stop reading and go to A&E.
Do antibiotics cure a tooth infection?
No. Antibiotics do not cure a tooth infection, and UK clinical guidance is unusually blunt about it. A dental infection has a physical source, normally a dying or dead nerve inside a tooth or a pocket of pus trapped in the surrounding bone. Antibiotics circulate in your bloodstream and can suppress bacteria spreading outwards from that source, but they cannot reach into a tooth with no blood supply and they cannot drain pus. The source has to be dealt with mechanically.
NHS advice states plainly that a dental abscess "will not go away on its own" [1]. The treatments it describes are physical ones: "The dentist will drain away the pus," and, if a problem with the tooth caused the abscess, "you may need root canal treatment or the tooth may be removed" [1]. Antibiotics appear on that page only as something that may be given alongside painkillers, not as the treatment itself.
The Scottish Dental Clinical Effectiveness Programme, which produces the prescribing guidance UK dentists work to, is more direct still. Its guidance instructs dentists to "use local measures to treat bacterial infections in the first instance" and states that "prescribing antibiotics in addition to local measures makes very little or no difference to outcomes in most patients presenting with acute dental conditions" [2]. Its core rule for practitioners is to "use antibiotics in conjunction with, and not as an alternative to, local measures" [2].
This matters practically, not just academically. A course of antibiotics may settle the swelling and dull the pain enough that the problem feels solved. The tooth underneath is unchanged. Once the course finishes, the infection commonly returns, often worse, and each round of unnecessary antibiotics makes them less likely to work when you genuinely need them.
Which antibiotics UK dentists prescribe for dental infections
UK dentists work from a narrow, deliberately conservative list. The guidance favours older, narrow-spectrum drugs over broad-spectrum ones, because narrow-spectrum agents do the job for dental infections while doing less collateral damage to resistance patterns.
| Agent | What UK guidance says about it |
|---|---|
| Phenoxymethylpenicillin (penicillin V) | Stated first choice for dento-alveolar infections, preferred for its narrower spectrum of activity [2] |
| Amoxicillin | Also used first-line for acute dental abscess [3] |
| Metronidazole | Added where there is spreading infection or systemic involvement [3] |
| Clindamycin, clarithromycin | Second-line only, after a review confirms a full first-line course has not worked [4] |
Two points are worth understanding before you read anything into that table.
Broad-spectrum antibiotics are actively discouraged in dentistry. Agents such as co-amoxiclav and the cephalosporins are described in UK dental guidance as offering no advantage for most patients with dental infections, and are reserved for specialist or second-line use [2]. If you have previously been given something stronger for a chest infection, that is not evidence it is the right drug for your tooth.
Second-line does not mean stronger. Clindamycin and clarithromycin sit behind a review gate: guidance says they should be used only "if a patient has completed a full course of the first-line antibiotic prescribed and has not responded to treatment" [4].
This article deliberately does not publish doses, frequencies or course lengths, and you should be wary of any consumer page that does. Those decisions depend on the specific infection, your medical history, your other medications and your allergies. If you are allergic to penicillin, tell your dentist. The recommended alternative in that situation has changed more than once in recent revisions of UK guidance, and it is a decision for the clinician in front of you rather than something to plan from a website.
When antibiotics are appropriate, and when they are not
UK guidance sets a genuinely high bar. Antibiotics are indicated when the infection has escaped the immediate area or is affecting you systemically, or when a dentist cannot achieve drainage straight away.
The prescribing guidance states that antibiotics "are only required if immediate drainage is not achieved using local measures or in cases of spreading infection (swelling, cellulitis, lymph node involvement) or systemic involvement (fever, malaise)" [3]. It is equally clear on the other side, stating that antibiotics "are not appropriate in cases where there is no clinical indication, such as when the infection is localised to the peri-radicular tissues" [3]. In plain terms: a painful tooth with a contained infection needs the tooth treating, not a prescription.
Guidance also treats some patients as higher risk and lowers the threshold accordingly, including people who are immunocompromised or who have poorly controlled diabetes [2]. If either applies to you, say so when you make contact, because it changes how urgently you should be seen.
How long antibiotics take to work, and why feeling better is not the same as being fixed
There is no reliable patient-facing answer to "how many hours until they kick in", and you will find plenty of confident numbers online that trace back to no clinical source at all. What UK guidance does specify is a clinical checkpoint: dentists are told to "review patients who have been prescribed a course of antibiotic treatment, ideally at 3 days" [3].
What happens at that review is revealing. Guidance says that if systemic signs and symptoms have resolved, the dentist should "advise the patient to stop taking the antibiotic", and warns against prolonging courses after symptoms settle because doing so "can encourage the development of antibiotic resistance" [3].
Read that carefully and the central message of this article falls out of it. The antibiotic course ends when your body stops showing signs of a spreading infection. Nothing about that endpoint means the tooth has been repaired. The abscess still has a cause, and until a dentist removes that cause, you have a treated symptom and an untreated tooth.
Who can prescribe antibiotics for a tooth infection in the UK
This is where most people hope to find a shortcut, so it is worth being precise. Across all four UK nations, there is no route to antibiotics for toothache that bypasses a clinical assessment.
| Route | Can they prescribe antibiotics for a dental infection? |
|---|---|
| Your dentist (NHS or private) | Yes, after assessing you, and normally alongside treatment rather than instead of it [8] |
| NHS 111 / urgent dental services | They triage and arrange urgent dental appointments rather than prescribing themselves [7] |
| Your GP | NHS advice tells patients not to attend a GP surgery for dental treatment [1] |
| Your pharmacist via Pharmacy First | No. Dental infection is not a covered condition anywhere in the UK [5] |
Your dentist
Dentists can prescribe, but GDC guidance constrains how. It requires that dental professionals "have an understanding of your patient's current health and medication, including any relevant medical history, in order to prescribe medicines safely", and that prescribing responsibly means "prescribing only where you are able to form an objective view of your patient's health and clinical needs" [8]. On remote prescribing specifically, the guidance says dentists "should only use remote means to prescribe medicines for dental patients if there is no other viable option and it is in their best interests" [8].
That is the regulatory reason a phone call rarely produces a prescription on its own. A dentist who prescribes for a mouth they have not examined is working against their own regulator's standards.
NHS 111 and urgent dental care
NHS 111 is the correct route when you have no dentist or cannot get an urgent appointment, but its function is triage and access rather than prescribing. NHS guidance directs patients to "call 111 or get help from 111 online", and sets expectations for how quickly you should then be seen: "You should be offered urgent dental treatment within 24 hours or 7 days, depending on your symptoms" [7]. For a knocked-out adult tooth, the standard is tighter, with emergency care offered "within 1 hour, or as soon as possible" [7].
Your GP
NHS advice on dental abscesses is unambiguous: "Do not go to a GP surgery as they will not be able to give you dental treatment" [1]. GPs are not commissioned to provide dental care, do not have the equipment to drain an abscess or open a tooth, and cannot solve the underlying problem. A GP may prescribe where there are clear signs of spreading or systemic infection, but that is a holding measure that still ends with you needing a dentist.
Your pharmacist, and what Pharmacy First does not cover
This is the most common and most costly misunderstanding, and it is worth stating precisely. NHS Pharmacy First in England covers exactly seven clinical pathways: acute otitis media, impetigo, infected insect bites, shingles, sinusitis, sore throat, and uncomplicated urinary tract infections in women [5]. Dental infection and toothache are not among them, and were not added at any point up to July 2026 [5].
The devolved equivalents exclude dental too. Pharmacy First Scotland covers a long list of minor conditions including mouth ulcers, but not toothache or dental infection [19]. The Common Ailments Service in Wales covers 28 conditions and directs dental pain back to dental practices for an urgent appointment [20]. Northern Ireland runs separate single-condition pharmacy services, currently covering conditions such as sore throat, impetigo and shingles, with no dental pathway.
What a pharmacist genuinely can do is help with pain. NHS advice on toothache points to painkillers such as ibuprofen or paracetamol, and to pain-relieving gels available from pharmacies and supermarkets [6]. That NHS page does not mention antibiotics at all, which tells you how the health service views the pharmacy route for this problem.
Why you still need the tooth treated
Once the infection is under control, one of three things generally has to happen, and all three are jobs for a dentist.
Drainage. The immediate priority in an abscess is releasing the pus, which a dentist may do through the tooth, through the gum, or by removing the tooth [3].
Root canal treatment. Where the tooth is worth keeping, the infected nerve tissue is cleaned out and the canal sealed. Our guide to root canal treatment costs and what the procedure involves covers this in detail.
Extraction. Where the tooth cannot be saved, removing it removes the infection's home. Our tooth extraction cost guide sets out NHS and private prices and what recovery looks like.
Which of these applies depends on how much healthy tooth structure remains, where the tooth sits in your mouth, and your own preference once the options are explained. Both NHS and private routes offer all three, and the clinical decision should not change based on how you are paying.
What urgent NHS dental treatment costs
In England, NHS dental charges are banded, and urgent or emergency treatment is charged at the Band 1 rate, whatever the appointment involves [9]. Charges rose on 1 April 2026.
| Band | Cost (England, from April 2026) | What it covers |
|---|---|---|
| Band 1 | £27.90 | Examination, diagnosis, advice, X-rays, scale and polish. Urgent and emergency treatment is charged at this rate |
| 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 |
You pay one charge per course of treatment, even where it takes several visits [9]. Our full guide to NHS dental charges and bands explains how courses of treatment are counted.
Charges differ across the UK, and the differences are significant if you are outside England.
| Nation | How you are charged |
|---|---|
| England | Banded charges, urgent treatment at the £27.90 Band 1 rate [9] |
| Wales | Fixed charge per care package under the contract introduced in 2026, with a maximum total charge of £384 for a course of treatment [11] |
| Scotland | Examinations free for everyone. Treatment free for under-26s. Other adults pay 80% of the cost, capped at £384 per course [12] |
| Northern Ireland | Patients pay 80% of the gross cost of treatment, capped at £384 per course [13] |
Private emergency appointments sit outside all of this and are typically charged as a consultation fee plus the cost of whatever treatment follows. Prices vary widely by practice and by area, so ask what the appointment fee covers before you book.
Who gets NHS dental treatment free
Cost should not be the reason you leave an infection untreated, and a substantial group pays nothing. In England, NHS dental treatment is free if you are [10]:
- Aged under 18, or under 19 and in full-time education
- Pregnant, or have had a baby or a stillbirth in the previous 12 months
- Being treated in an NHS hospital by a hospital dentist
- Receiving Income-related Employment and Support Allowance, Pension Credit Guarantee Credit, or Universal Credit (subject to the earnings threshold)
- Aged under 20 and a dependant of someone receiving a qualifying benefit
- The holder of a valid HC2 certificate through the NHS Low Income Scheme
Scotland, Wales and Northern Ireland run their own exemption lists, which are broadly similar in structure but not identical, and Scotland and Wales additionally make examinations free for wider groups.
Red flags: when a dental infection becomes an emergency
Most dental infections are urgent rather than life-threatening. A minority are genuinely dangerous, and the difference is in whether the swelling is starting to interfere with your airway, your eye, or your ability to open your mouth.
Go to A&E or call 999 if you [1]:
- Are finding it hard to breathe, speak or swallow
- Have a swollen or painful eye, or suddenly develop problems with your eyesight
- Have a lot of swelling in your mouth
- Are finding it hard to open your mouth
NHS advice on toothache adds swelling around the eye or in the neck to that list [6]. These are not symptoms to sleep on or to manage with a repeat prescription. If you are already taking antibiotics and any of the above develops, that is a reason to seek emergency care rather than reassurance that treatment is under way.
For everything below that threshold, our emergency dentist guide explains how urgent dental access works, and our dental abscess guide covers symptoms, treatment and costs for abscesses specifically.
Managing the pain while you wait
Pain relief is not a substitute for treatment, but it makes the wait bearable. NHS advice suggests painkillers such as ibuprofen or paracetamol, and pain-relieving gels sold in pharmacies and supermarkets [6]. Follow the instructions on the packet, check with a pharmacist if you take other medication, and be aware that painkillers masking the pain does not mean the infection is resolving.
Our guide to toothache relief and out-of-hours care goes into more detail on getting through a night or a weekend with dental pain.
Why leftover or online antibiotics are a bad idea
Two shortcuts are worth closing off explicitly, because both are common and both carry real risk.
Leftover courses and other people's prescriptions. NHS advice is direct: "Only ever take antibiotics prescribed for you, never 'borrow' them from a friend or family member" [14]. A leftover part-course is by definition the wrong quantity, may be the wrong drug for a dental infection entirely, and may be out of date. The UKHSA's public campaign on antibiotic use makes the same points, warning against saving antibiotics for future use and against taking medicines prescribed for someone else [15].
Buying online. Antibiotics are prescription-only medicines in the UK and cannot legally be supplied without a prescription from a qualified prescriber. The MHRA's public campaign on fake medicines warns that "it is illegal to sell fake or unauthorised medicines and medical devices in the UK", and that medicines from unregistered sellers may be out of date, diluted or counterfeit [18]. If you do use a legitimate online pharmacy for anything, check it against the General Pharmaceutical Council register first.
There is a bigger picture here too. Dental prescribing is a recognised focus of national antimicrobial stewardship work, and the UKHSA maintains a dedicated dental antimicrobial stewardship toolkit for exactly this reason [16]. As the UKHSA's chief executive Professor Dame Jenny Harries put it, "antibiotic resistance is impacting people every day in this country and is one of the biggest threats to our future health" [15]. Every avoidable course makes the next necessary one less likely to work.
How to get seen by a dentist quickly
Access has genuinely improved, though it remains difficult for a significant minority. NHS England's 2026 GP Patient Survey, published on 9 July 2026, found that 81.5% of patients who had tried to get an NHS dental appointment in the previous two years had succeeded, up 3.3 percentage points on the 78.2% recorded in 2025 [17]. That still leaves close to one in five people who tried and could not, so if you are struggling, you are not imagining the problem.
A practical order of attack:
- Call your own dentist first, even if you have not been for years, and say the word "infection" or "swelling" rather than "appointment". Practices hold urgent slots that are not visible in online booking.
- If you have no dentist, use NHS 111 or 111 online, which can direct you to urgent dental services in your area [6].
- Search for practices taking new patients in your area and ask directly about emergency appointments, since many take urgent cases before they take routine registrations.
- Consider a private emergency appointment if the NHS route cannot see you and the infection is progressing. Ask for the fee up front.
Our guide to getting dental care when you cannot get an NHS appointment covers the fallback options in more depth.
Frequently Asked Questions
Can I get antibiotics for a tooth infection without seeing a dentist?
Not through any standard NHS route. Dental infection is not covered by Pharmacy First in England or its equivalents in Scotland, Wales and Northern Ireland [5]. NHS advice tells patients not to attend a GP surgery for dental treatment [1], and GDC guidance requires dentists to form an objective view of your clinical needs before prescribing [8].
Do antibiotics cure a tooth infection or an abscess?
No. NHS advice states a dental abscess "will not go away on its own" and requires drainage, root canal treatment or extraction [1]. UK prescribing guidance instructs dentists to use antibiotics "in conjunction with, and not as an alternative to, local measures" [2]. Antibiotics can control a spreading infection but never remove its source.
Can a pharmacist give me antibiotics for toothache?
No. NHS Pharmacy First in England covers seven conditions, and toothache is not one of them [5]. Scottish, Welsh and Northern Irish pharmacy schemes exclude dental pain too. A pharmacist can advise on painkillers such as ibuprofen or paracetamol and on pain-relieving gels [6], then direct you to dental services.
How long do antibiotics take to work for a tooth infection?
UK guidance does not give patients an hours-based timeframe, and figures circulating online are not from clinical sources. What guidance does specify is that dentists should review patients on a course of antibiotics "ideally at 3 days" [3]. Improvement at that point reflects the infection settling, not the tooth being repaired.
What happens if I leave a tooth infection untreated?
It will not resolve by itself [1]. Infections can spread into surrounding tissue and become dangerous. Seek emergency care if you struggle to breathe, speak or swallow, develop a swollen or painful eye or vision problems, have significant swelling in your mouth, or cannot open your mouth [1].
Can my GP prescribe antibiotics for a tooth infection?
A GP may prescribe where there are clear signs of spreading or systemic infection, but NHS advice tells patients not to attend a GP surgery for dental problems because GPs cannot provide dental treatment [1]. Even where antibiotics are given, you still need a dentist to treat the tooth itself.
How much does emergency NHS dental treatment cost in England?
Urgent and emergency NHS dental treatment is charged at the Band 1 rate of £27.90 from April 2026, whatever the appointment involves [9]. You pay nothing if you are exempt, including under-18s, under-19s in full-time education, pregnant patients, and people on qualifying benefits or holding an HC2 certificate [10].
Is toothache covered by NHS Pharmacy First?
No. The service covers exactly seven pathways: acute otitis media, impetigo, infected insect bites, shingles, sinusitis, sore throat, and uncomplicated urinary tract infections in women [5]. Dental infection has never been included, and this had not changed as of July 2026. Pharmacies redirect dental pain to dental services.
The bottom line
Antibiotics have a real but narrow role in dental infections. They can stop an infection spreading while you wait, and for a minority of patients with systemic involvement they are genuinely important. What they cannot do, in any circumstance, is fix the tooth that caused the problem. Every route that seems to offer a way round seeing a dentist, whether that is the pharmacy counter, the GP surgery, a leftover box in a drawer, or a website, either does not exist or is not safe.
The useful thing to do with that knowledge is to stop hunting for a prescription and start hunting for an appointment. Even a private consultation to get the infection drained is usually cheaper, faster and less painful than three rounds of antibiotics and an emergency extraction six months later.
Search for a dentist near you to find GDC-registered practices in your area, compare NHS and private options, and get the tooth itself dealt with.
Sources
- Dental abscess -- NHS.uk, page last reviewed 18 March 2026, accessed 2026-07-27
- Drug Prescribing for Dentistry: bacterial infections -- Scottish Dental Clinical Effectiveness Programme, updated May 2026, accessed 2026-07-27
- Drug Prescribing for Dentistry: dental abscess -- Scottish Dental Clinical Effectiveness Programme, accessed 2026-07-27
- Drug Prescribing for Dentistry: second-line antibiotics -- Scottish Dental Clinical Effectiveness Programme, accessed 2026-07-27
- NHS Pharmacy First Service: clinical pathways, patient group directions and protocol -- NHS Business Services Authority, accessed 2026-07-27
- Toothache -- NHS.uk, page last reviewed 1 July 2024, accessed 2026-07-27
- How can I access an NHS dentist in an emergency or out of hours? -- NHS.uk, page last reviewed 14 May 2025, accessed 2026-07-27
- Guidance on prescribing medicines -- General Dental Council, accessed 2026-07-27
- How much does NHS dental treatment cost? -- NHS.uk, page last reviewed 13 March 2025, accessed 2026-07-27
- Who can get free NHS dental treatment? -- NHS.uk, page last reviewed 11 February 2025, accessed 2026-07-27
- NHS dental charges and exemptions -- Welsh Government, accessed 2026-07-27
- Receiving NHS dental treatment in Scotland -- NHS inform Scotland, accessed 2026-07-27
- Dental charges and fees -- Business Services Organisation, Health and Social Care Northern Ireland, accessed 2026-07-27
- Antibiotics -- NHS.uk, page last reviewed 11 November 2022, accessed 2026-07-27
- UKHSA launches campaign to tackle misconceptions on antibiotics -- UK Health Security Agency, published 7 April 2025, accessed 2026-07-27
- Dental antimicrobial stewardship toolkit -- UK Health Security Agency, updated 19 December 2023, accessed 2026-07-27
- GP Patient Survey 2026 -- NHS England and Ipsos, published 9 July 2026, accessed 2026-07-27
- FakeMeds -- Medicines and Healthcare products Regulatory Agency, accessed 2026-07-27
- Pharmacy First Scotland -- NHS Lothian, accessed 2026-07-27
- Common Ailments Service -- Community Pharmacy Wales, accessed 2026-07-27
