Breath & Mouth
How to get rid of bad breath, including morning breath that lingers
When a partner mentions your morning breath, it is natural to worry it follows you to work. Most bad breath starts in the mouth, so match yours to its cause, follow a daily routine for a few weeks, and judge the result honestly.
On this page (9 sections)
- What causes bad breath? Match yours to the likely source
- Why morning breath is worse, and what actually helps
- How to get rid of bad breath: a daily routine to try
- Tongue scrapers, rinses and probiotics: what the evidence says
- Troubleshooting: "I still have bad breath after brushing"
- When to see a dentist or doctor about bad breath
- Frequently asked questions
- Keep going
- Sources
Here is how to get rid of bad breath in most cases, including the morning breath a partner notices first: keep your teeth, tongue and mouth clean, as the NHS puts it, by brushing twice a day with fluoride toothpaste, cleaning between your teeth once a day and gently cleaning your tongue. That works because most bad breath starts in the mouth, from bacteria and food left on the teeth, between them and on the back of the tongue, according to MedlinePlus and Cochrane.
You are far from alone: Cochrane notes that 50% to 60% of people worldwide have experienced bad breath, and that it can affect confidence, relationships and work. Below: how to tell whether yours comes mainly from a dry mouth, a coated tongue or inflamed gums, a daily routine to try, what the evidence shows for scrapers and rinses, and the signs that need a dentist or doctor.
Key takeaways
- Most bad breath comes from inside the mouth: plaque, gum disease, cavities and the back of the tongue (MedlinePlus, Cochrane).
- Morning breath usually has a simple cause: saliva flow is at its lowest during sleep (ADA), so bacteria and food left in the mouth build up overnight.
- A dry mouth makes it worse, especially at night and with mouth breathing (ADA).
- Tongue cleaning is recommended by the NHS; the evidence for it, and for rinses, is uncertain (Cochrane), so judge it by your own result over a few weeks.
- If bad breath lasts a few weeks despite good cleaning, see a dentist (NHS).
Do this tonight
- Brush for two minutes, clean between your teeth, then gently clean the back of your tongue.
- Put a glass of water by the bed. If your mouth is often dry overnight, consider a humidifier (ADA).
- If you wear dentures, take them out and clean them (NHS).
What causes bad breath? Match yours to the likely source
MedlinePlus says bad breath is usually related to dental hygiene: when plaque is not cleared, bacteria in the mouth release sulfur compounds. Cochrane adds that the bacteria and food particles collect most commonly at the back of the tongue. Use the table to see which pattern fits you best. It is a guide to where to start, not a diagnosis.
| What you notice | Likely source | Where to start |
|---|---|---|
| Strongest on waking, better after breakfast and brushing | Morning breath: saliva is at its lowest during sleep (ADA) | The night routine below |
| Mouth dry or sticky at night; you breathe through your mouth | Dry mouth, which the ADA says worsens during sleep and with mouth breathing | Water, a humidifier, no alcohol-containing rinses; the dry mouth at night guide has more |
| A white or yellowish coating on the back of the tongue | Bacteria and food on the tongue (Cochrane) | Gentle daily tongue cleaning (NHS) |
| Gums that bleed, or look red or puffy | Gum disease (NHS) | A dentist, plus the routine in the guide to bleeding gums |
| Hours after garlic, onions, spicy food or coffee | Food and drink (NHS, MedlinePlus) | Brushing, water, sugar-free gum or mints after (NHS) |
| You smoke or drink a lot of alcohol | Tobacco and alcohol (NHS, MedlinePlus) | Do not smoke, and do not drink too much alcohol (NHS) |
| Sore throat, or deep pits in the tonsils | Throat or tonsil problems (MedlinePlus, NHS) | A doctor if it lasts |
| Bad breath with fever, cough, or face pain and nasal discharge | Possible respiratory or sinus infection (MedlinePlus) | Contact your doctor |
MedlinePlus also lists some medicines, vitamin supplements in large doses, reflux, diabetes and kidney disease among other causes. If a medicine dries your mouth, do not stop it; ask your prescriber or a pharmacist about options.
Why morning breath is worse, and what actually helps
Saliva helps cleanse the mouth, and the ADA explains that saliva output reaches its lowest levels during sleep, and that mouth breathing makes a dry mouth worse. With less saliva overnight, the bacteria and food particles that MedlinePlus and Cochrane link to bad breath have hours to build up, which is why breath is often strongest on waking.
So morning breath often has a normal cause. What matters is whether it clears after you brush and eat. If it lingers through the day, look at the other rows in the table: a coated tongue, gum disease, daytime dry mouth, or something outside the mouth.
How to get rid of bad breath: a daily routine to try
This routine follows the NHS self-care advice and the ADA's dry-mouth guidance. Do it every day, and after a couple of weeks ask someone you trust for an honest opinion.
Every night: clean teeth, gaps and tongue
Gently brush your teeth and gums for 2 minutes with a fluoride toothpaste, then clean between your teeth with floss or interdental brushes (NHS). Finish by gently cleaning your tongue with a tongue scraper or cleaner; the NHS advises doing this once a day. Do not press so hard that your gums or tongue bleed (NHS). If your gums bleed a little, keep cleaning those spots gently rather than skipping them: gum disease is one of the causes of bad breath the NHS names. If cold water makes your teeth twinge, see why your teeth may be sensitive alongside this routine.
Every night: protect your saliva
Keep water by the bed and sip it if you wake dry. The ADA suggests a humidifier at night and avoiding alcohol, including alcohol-containing mouthrinses, tobacco and caffeine when your mouth is dry. If you wear dentures, remove them at night and clean them (NHS).
Every morning: brush again
Brush twice a day in total (NHS), and spit out the toothpaste rather than rinsing with water straight away (NHS).
During the day: keep your mouth moist and clean
Sip water, and use sugar-free mints or gum after strong-smelling food or drink (NHS). The ADA lists sugar-free gum or candy as ways to stimulate saliva, while noting there is no strong evidence that they relieve dry-mouth symptoms. Avoid lots of sugary food and drink (NHS).
Optional: an antibacterial or alcohol-free rinse
The NHS suggests trying an antibacterial mouthwash or toothpaste. If your mouth tends to be dry, choose an alcohol-free rinse; the ADA advises avoiding alcohol-containing mouthrinses for dry mouth. Remember that MedlinePlus says mouthwashes do not treat the underlying problem, so a rinse is an extra, not the fix.
After a few weeks: decide
If your breath is clearly better, keep going. If it is not, or it returns quickly, the NHS says to see a dentist when bad breath does not go away after treating it yourself for a few weeks. A dentist can check for mouth causes the NHS lists, such as gum disease, holes in the teeth or an infection.
Suppose your partner notices strong breath most mornings, your mouth feels sticky on waking, and you breathe through your mouth when your nose is blocked. For two weeks you add a full two-minute brush, floss and gentle tongue cleaning at night, keep water by the bed, run a humidifier and swap an alcohol-based rinse for an alcohol-free one. Your partner says the morning breath is milder and you no longer notice a bad taste mid-morning. If nothing had changed, or your gums had kept bleeding, the next step would be a dental check rather than a stronger rinse.
Your next step
Start the night routine tonight and set a reminder for two weeks from now to check in honestly. If a dry mouth is the bigger problem, the Fresh Breath and Dry Mouth start-here page lists the guides in the order that helps most.
Tongue scrapers, rinses and probiotics: what the evidence says
This is where honesty matters. A Cochrane review of 44 studies rated the certainty of the evidence low to very low for the comparisons it could assess, including tongue cleaning, chewing gum, toothpastes and mouthwashes, and concluded there is not enough evidence to say which intervention works better. The NHS still recommends gentle daily tongue cleaning. For probiotics, a 2022 BMJ Open meta-analysis of seven trials found that some strains may ease bad breath in the short term, up to about four weeks, while warning that limited data and differences between trials make that finding less reliable.
| Option | For it | Against it |
|---|---|---|
| Fluoride toothpaste and a toothbrush | The base of every routine: brush gently twice a day for 2 minutes (NHS) | Does not reach between the teeth on its own |
| Floss or interdental brushes | Clean where a brush cannot reach, at least once a day (NHS) | Pick the one you will use every day |
| Tongue scraper or cleaner | Recommended daily by the NHS; bacteria and food collect most at the back of the tongue (Cochrane) | Cochrane rates the evidence very uncertain; be gentle |
| Alcohol-free rinse | Suits a dry mouth (ADA) | MedlinePlus says mouthwashes do not treat the underlying problem |
| Antibacterial mouthwash or toothpaste | The NHS suggests trying one | Evidence very uncertain (Cochrane) |
| Sugar-free gum or mints | Suggested after strong foods (NHS); stimulates saliva (ADA) | Cochrane rates the evidence for breath very uncertain (it tested a eucalyptus gum) |
| Oral probiotics | Some strains may ease bad breath for up to about four weeks (BMJ Open meta-analysis) | Limited data and varied trials reduce the reliability of that finding (BMJ Open) |
What is worth buying, if anything, and what to look for:
- The basics first. A soft-bristled brush (manual or electric), a fluoride toothpaste and one between-teeth tool you will use daily. The guides to electric vs manual toothbrushes and water flossers vs floss compare the options honestly.
- A tongue scraper, if you want one. The NHS mentions a tongue scraper or cleaner; if you would rather not buy a tool, you can gently clean your tongue with your soft toothbrush. Options: tongue scrapers (Amazon, affiliate link) opens in a new tab
- An alcohol-free mouthwash, only if you like using one. Check the label says alcohol-free if your mouth runs dry (ADA). MedlinePlus says mouthwashes do not treat the underlying problem. Options: alcohol-free mouthwash (Amazon, affiliate link) opens in a new tab
- Sugar-free gum or mints for the workday. Check "sugar-free" on the pack, since sugary sweets feed the bacteria you are trying to clear (NHS). Options: sugar-free gum (Amazon, affiliate link) opens in a new tab
Oral probiotics and other supplements are not a substitute for the routine above. If an ad for a breath or gum supplement has you wondering, read what the evidence shows on oral probiotics first, then the ProDentim review or the ProvaDent review for how each vendor's claims compare with the published evidence.
Troubleshooting: "I still have bad breath after brushing"
- If your breath is fine after brushing but bad again by mid-morning
- Look at the gaps between teeth and the tongue, which brushing misses, and at daytime dry mouth. The NHS advises cleaning between teeth at least once a day; the guide on how to floss properly shows the gentle C-shape method.
- If your gums bleed when you clean
- Keep cleaning gently, and read gingivitis vs periodontitis to see what red, bleeding gums may mean. If your gums also seem to be pulling back from your teeth, book a dentist rather than waiting.
- If your mouth is dry all day
- The ADA lists medicines as the most frequent cause of reduced saliva. Keep taking your medicines; ask your prescriber or a pharmacist whether one could be the cause, and tell your dentist.
- If your tongue feels sore after scraping
- Use lighter pressure, or a soft toothbrush instead. The NHS says not to brush so hard that your gums or tongue bleed.
- If your mouth is healthy but the smell persists
- MedlinePlus advises contacting a provider when breath odor does not go away and there is no obvious cause. Reflux, sinus problems, diabetes and kidney disease are among the causes it lists.
When to see a dentist or doctor about bad breath
Book a dental visit soon if
- Bad breath does not go away after treating it yourself for a few weeks (NHS).
- You have toothache or tooth pain (NHS).
- Your gums are painful, bleeding or swollen (NHS).
- Your face or jaw is swollen: ask for an urgent dentist appointment, the same day if you can (the NHS says a dental abscess needs urgent treatment by a dentist).
- An adult tooth is loose or wobbly (NHS).
- Gums that bleed: book a dental check, especially if you have not had a cleaning and exam in the last 6 months (MedlinePlus). MedlinePlus notes that bleeding and tenderness usually lessen within 1 or 2 weeks after a professional cleaning with good home care, so bleeding that has not stopped about two weeks after that needs another look.
- A sore, lump, or red or white patch in your mouth that lasts more than two weeks (NIDCR says to see a dentist or doctor).
- Breath that smells fruity can be a sign of ketoacidosis in people with diabetes, which MedlinePlus calls potentially life-threatening: get medical help promptly.
- Emergency: trouble breathing, speaking or swallowing, a swollen or painful eye, a lot of swelling in your mouth, or trouble opening your mouth: call 911 or go to the emergency room now (NHS).
Who to see. Start with a dentist: only an exam (and sometimes an X-ray) can tell gum disease, a cavity, a cracked tooth or an infection apart. No regular dentist, or worried about cost? The National Institute of Dental and Craniofacial Research lists lower-cost options, including dental schools and community clinics, and you can search for a federally funded health center near you on findahealthcenter.hrsa.gov.
Frequently asked questions
Does tongue scraping help bad breath?
It may, and it is low-risk if you are gentle. The NHS recommends cleaning your tongue once a day, and Cochrane notes the back of the tongue is where bacteria and food collect most, but its review rated the evidence for tongue cleaning very uncertain. Try it for a few weeks and judge the result yourself.
Why do I still have bad breath even after brushing my teeth?
Brushing alone does not clean between the teeth, which the NHS advises doing at least once a day, or the back of the tongue, where Cochrane says bacteria and food most commonly collect. A dry mouth, gum disease, cavities, tonsil or sinus problems can also keep breath strong (MedlinePlus, NHS). Add daily cleaning between your teeth and gentle tongue cleaning, and see a dentist if it lasts a few weeks.
Does gut health affect bad breath?
Usually the cause is in the mouth: MedlinePlus says bad breath is usually related to dental hygiene. It does list reflux (GERD) among other causes. If your mouth is healthy and the smell persists, talk to your doctor.
Is tea or coffee bad for your breath?
None of the sources here tests tea for breath. MedlinePlus lists coffee among foods and drinks that can cause bad breath, and the ADA lists too much caffeine as a lifestyle cause of dry mouth. Water is the safest drink if dryness is part of your problem.
Sources
- Bad breath, NHS (accessed October 28, 2026).
- Breath odor, MedlinePlus Medical Encyclopedia, U.S. National Library of Medicine (accessed October 28, 2026).
- Interventions for managing bad breath, Cochrane (accessed October 28, 2026).
- Efficacy of probiotics in the management of halitosis: a systematic review and meta-analysis, BMJ Open, 2022 (accessed October 28, 2026).
- Xerostomia (Dry Mouth), American Dental Association (accessed October 28, 2026).
- Gingivitis, MedlinePlus Medical Encyclopedia, U.S. National Library of Medicine (accessed October 28, 2026).
- Oral Cancer, National Institute of Dental and Craniofacial Research (accessed October 28, 2026).
- Dental abscess, NHS (accessed October 28, 2026).
Breath or dry mouth bothering you? Start here
Find the cause of bad breath or a dry mouth, in the order that helps most, with clear signs for when to see a dentist or doctor.