CBD may take the edge off some kinds of dental pain, but it does not treat what causes a toothache, and the UK guidance on how much you can safely take sits far below the doses used in the studies that got people excited. If you have tooth pain right now, the NHS route comes first: painkillers you already know are suitable for you, and a dentist. This guide explains what the research found, where the gaps are, and how CBD could fit around proper dental care, not instead of it.
TL;DR
- A 2023 randomised trial found a single high dose of pharmaceutical-grade CBD reduced acute dental pain, but it used doses far above what UK food supplements are advised to provide.
- The Food Standards Agency advises healthy adults to limit CBD to 10 mg a day, and people on medication, pregnant or breastfeeding should avoid it.
- CBD does not fix infection, decay or a cracked tooth. Toothache lasting more than 2 days needs a dentist.
- Facial swelling, fever or trouble breathing or swallowing is an emergency, not a CBD moment.
Table of Contents
- What CBD might do for tooth and gum pain
- What the clinical trial actually showed
- The UK limit: 10 mg a day
- Medication interactions you should know about
- What the NHS says to do for toothache
- Where CBD could sensibly fit
- Our perspective
- If you want to try CBD as part of your routine
- Safer-use checklist before you buy
- FAQ
- Sources
What CBD might do for tooth and gum pain
CBD (cannabidiol) is one of the cannabinoids in the hemp plant. It interacts with the endocannabinoid system, the network of receptors that helps regulate pain signals, inflammation and mood. The idea is simple: if inflammation is part of what makes a tooth or gum hurt, a compound that can turn that response down a notch might help you feel less discomfort.
A 2024 review of cannabidiol in oral diseases is more cautious than the headlines. It describes promise for chronic myofascial and jaw (temporomandibular) pain, where anti-inflammatory and muscle-relaxing effects are relevant, but finds results for acute, sharp dental pain such as pulpitis inconsistent. Its message is that CBD is at most an adjunct to definitive dental care, not a replacement.
That distinction matters. “Dental pain” covers very different problems:
| Type of pain | Typical cause | Where CBD might fit |
|---|---|---|
| Sharp pain with hot, cold or sweet food | Exposed dentine, early decay | Unproven; a dentist should check it |
| Constant dull throbbing | Infection or abscess | Not a treatment; needs dental assessment |
| Jaw ache, clicking, tight muscles | Grinding, TMD | Some research interest, still limited |
| Sore gums | Gum inflammation, irritation | Early evidence only |
| Pain after an extraction | Normal healing, dry socket | Follow your dentist’s aftercare |
What the clinical trial actually showed
The study most people mean is a randomised, placebo-controlled trial published in the Journal of Dental Research (Chrepa and colleagues, 2023). Adults with moderate to severe acute dental pain, waiting for treatment, took a single dose of pharmaceutical-grade CBD. Reported pain fell by roughly three quarters from baseline within three hours, and the higher dose worked faster. The Rutgers Health write-up called it a first-of-its-kind result for a non-addictive alternative.
It is a genuinely interesting study. Here is why it does not translate directly to a bottle of CBD drops from a shop:
- Pharmaceutical-grade product. The trial used a standardised, purified preparation. A review of cannabidiol for toothache points out that over-the-counter CBD has shown inconsistent purity and potency in independent testing, and is not held to the standard of an approved medicine.
- Doses in the hundreds of milligrams. The FSA’s committee advice makes the point that doses used in clinical pain research are well above the levels suitable for everyday supplement use, see the ACNFP adviceisolateasanovelfoodforuseinfoodsupplements-RP354).
- Short follow-up, small groups. Three hours of data on a single dose says little about repeated use.
- Side effects were real. The trial authors reported more sedation, abdominal pain and diarrhoea with CBD than with placebo.
So the honest reading is: CBD is a promising research compound for acute dental pain, and the evidence for typical supplement doses is still missing.
The UK limit: 10 mg a day
In the UK, CBD sold as a food supplement is regulated as a novel food. The Food Standards Agency says healthy adults should limit CBD to 10 mg a day, and that under 18s, people who are pregnant, breastfeeding or trying to conceive, and people taking medication should avoid it because of gaps in the safety evidence.
Two practical points follow:
- If a product or article suggests you take very large amounts to “knock out” a toothache, that is well outside UK advice.
- Wanting stronger effects is not a reason to exceed the limit. It is a reason to talk to a dentist or pharmacist about the right painkiller.
Our own guides cover the numbers in more detail: how much CBD is too much and the UK CBD dosage guide.
Medication interactions you should know about
This is the part many articles skip. CBD can inhibit liver enzymes (including CYP2C9 and CYP1A2) that break down a range of medicines. In practice that can raise blood levels of some drugs, such as warfarin, certain heart medicines and benzodiazepines. The FSA’s advice to avoid CBD if you take medication exists for this reason, as set out in the ACNFP safety adviceisolateasanovelfoodforuseinfoodsupplements).
If you take any regular prescription, ask your GP or pharmacist before trying CBD. That includes the days when you are also taking ibuprofen or paracetamol for toothache, and anything a dentist prescribes, such as antibiotics.
What the NHS says to do for toothache
The NHS toothache advice is clear. See a dentist if toothache lasts more than 2 days, because they can treat the cause and stop it getting worse. While you wait, the NHS describes ibuprofen and paracetamol as the usual non-urgent home options, taken according to the pack and your own health circumstances (ibuprofen is not suitable for everyone, so check with a pharmacist if unsure).
Local NHS pharmacy factsheets add some useful, low-risk steps: a desensitising toothpaste can ease short, sharp pain triggered by hot, cold or sweet foods (applied without rinsing afterwards), while a constant dull ache can point to infection of the tooth or gum.
When it is not a home-care problem
Get urgent help if toothache comes with:
- swelling in your face or neck
- a high temperature
- difficulty breathing or swallowing
The NHS treats these as signs you need urgent dental assessment, or A&E if breathing or swallowing is affected. An NHS dental pain leaflet from Royal Berkshire explains that an infection may need antibiotics as well as painkillers. The risk with any pain-masking product, CBD included, is that you feel better for a few hours and put off an appointment while an infection progresses.
Where CBD could sensibly fit
If you are an otherwise healthy adult, not on medication, and you already use CBD as part of your day, here is a grounded way to think about it.
- Book the dentist first. Pain with a cause needs a diagnosis. Everything else is secondary.
- Use standard pain relief as the NHS describes, if it is suitable for you.
- Treat CBD as a possible comfort aid, not a painkiller. Some people find a calm evening routine helps with the tension and poor sleep that come with ongoing jaw or tooth discomfort. That is a wellbeing use, and we make no claim that it treats dental pain.
- Stay at or under 10 mg a day in line with FSA advice, and start lower if you are new to it.
- Stop and speak to a professional if you feel unusually drowsy, have stomach upset, or your pain gets worse.
For dental anxiety, where the worry about an appointment is itself part of the problem, some people take CBD as part of their general routine. The evidence is early. A calm approach, telling your dentist you are nervous, and asking about options will do more.
Which format suits an oral routine?
The format changes how you take it, not the 10 mg ceiling.
- Tinctures (drops): easy to measure in small amounts. Many people hold them under the tongue, which we explain in CBD under the tongue.
- Gummies: simple and pre-measured, but they contain sugar, a consideration if your tooth pain is linked to decay. Our gummy dosage guide covers amounts.
- Soft gels: no taste, no sugar, fixed amount per capsule.
If you are sensitive in a particular tooth, or recovering from an extraction, avoid anything sticky or sugary and follow your dentist’s aftercare.
Our perspective
We make broad-spectrum CBD tinctures, gummy bears and soft gels in the UK, and we are asked about toothache more often than you might expect. Our answer is always the same: we would rather you see a dentist than buy anything from us for this.
The research is exciting, and we follow it closely. But we also read what the FSA says, and a trial dose in the hundreds of milligrams is not the same thing as a 10 mg daily supplement. We would be misleading you if we blurred that line. What we can offer is a product made with organically grown hemp, with third-party lab testing to confirm zero THC, for adults who want CBD as part of a daily wellness routine and who check with a professional first if they take medication.
Our view is that CBD is a support for how you feel day to day, not a substitute for a filling, a root canal or antibiotics. If your tooth hurts, book the appointment today. If it is also keeping you awake, that is a conversation to have with your dentist or pharmacist as well.
— Mike
If you want to try CBD as part of your routine
Our CBD tinctures, gummy bears and soft gels are all available in the SMOKO CBD collection, and we offer free UK shipping on orders over £30. If you prefer a pre-measured option, take a look at our broad spectrum CBD gummy bears. Read the label, work out the amount per serving, and keep your total at or below the FSA’s 10 mg a day. You must be 18 or over, see why in our UK age limit guide.
Safer-use checklist before you buy
- Check the product has batch-specific third-party lab results, including THC.
- Work out the milligrams of CBD per serving, not just per bottle.
- Ask your pharmacist if you take any regular medicine.
- Avoid CBD if you are pregnant, breastfeeding, trying to conceive or under 18.
- Don’t smoke or vape to ease tooth pain, and especially not after an extraction. Smoking is a known risk for slow healing and dry socket, as dental advice from the NHS pharmacy factsheets also says to avoid smoking.
- Keep a note of how you feel, so you can tell a dentist or doctor.
FAQ
Does CBD help toothache?
It might ease some pain, but the evidence is limited. One trial found large reductions in acute dental pain with a high dose of pharmaceutical-grade CBD, while reviews describe results for sharp dental pain as inconsistent. It does not treat the cause, so a toothache that lasts more than 2 days still needs a dentist.
Can I use CBD for wisdom tooth pain?
There is no solid evidence for CBD in wisdom tooth pain specifically. Pain from an impacted or infected wisdom tooth often needs dental treatment, and swelling, fever or trouble opening your mouth or swallowing means getting urgent help. Ask your dentist about suitable pain relief.
What is the best thing to take for severe toothache?
The NHS suggests ibuprofen and paracetamol for non-urgent toothache, following the pack instructions and your own health circumstances. A dentist can treat the cause, and a pharmacist can tell you what is safe alongside your other medicines. Severe pain with swelling, fever or breathing problems is an emergency.
How much CBD can I take in the UK?
The FSA advises healthy adults to limit CBD to 10 mg a day. People who are pregnant, breastfeeding, under 18 or taking medication are advised to avoid it.
Is CBD oil safe to use with painkillers?
CBD can affect how the liver processes some medicines, so check with a pharmacist or GP first, even for over-the-counter painkillers. Mention any CBD use to your dentist before they prescribe anything.
Sources
- Cannabidiol as an Alternative Analgesic for Acute Dental Pain (Journal of Dental Research)
- Rutgers Health: CBD and dental pain
- Review of cannabidiol in oral diseases, J Clin Med 2024
- Cannabidiol for Toothache: Ups, Downs, and Regulatory Considerations
- FSA: Food Fact Check on CBD safety and health claims
- ACNFP advice on CBD isolate (RP354)isolateasanovelfoodforuseinfoodsupplements-RP354)
- ACNFP advice on CBD isolateisolateasanovelfoodforuseinfoodsupplements)
- NHS: Toothache
- Royal Berkshire NHS: Dental pain leaflet
- NHS pharmacy dental factsheet: Toothache
- NHS pharmacy dental factsheets: Introduction
