What causes bad breath?
In most cases the cause is in the mouth: coating on the tongue, plaque, gum inflammation or cavities. Dry mouth, smoking, certain food and sometimes conditions of the nose, throat or stomach can also play a role.
Bad breath
Bad breath is annoying but usually easy to solve. Read the causes, what you can do yourself and when to seek help.
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What can you do yourself about bad breath?
Brush twice a day, clean between the teeth daily, scrape or brush the tongue and drink enough water. Stop smoking and eat regularly.
Does mouthwash help against bad breath?
It masks the smell temporarily, but does not solve the cause. Use strongly antiseptic mouthwash only briefly and as advised.
Why is a dry mouth a problem?
Saliva rinses away bacteria. With a dry mouth (due to medication, mouth breathing or dehydration) bad breath increases. Drinking water and sugar-free chewing gum can help.
When should I see the dentist or GP?
If the smell persists despite good oral care, a check-up with the dentist or hygienist is useful. If the mouth is healthy, discuss it with your GP.
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Please note: prices are indicative guideline amounts for 2026 and vary by practice and situation. This site does not replace personal advice from a dentist.