To find out what to do if you think you have symptoms, please visit Coronavirus symptom checker. Or visit our encyclopaedia page, which has general information and includes a BSL video.

NOTE: For up to date information about Coronavirus (COVID-19) visit the UK Department of Health and Social Care.


A dry mouth is rarely a sign of anything serious. There are things you can do to help ease it yourself.

What can cause a dry mouth?

  • dehydration – for example, from not drinking enough, sweating a lot or being ill
  • medicines – check the leaflet to see if dry mouth is a side effect
  • breathing through your mouth at night – this can happen if you have a blocked nose or you sleep with your mouth open
  • anxiety
  • cancer treatment (radiotherapy or chemotherapy)

Sometimes a dry mouth that doesn't go away may be caused by a condition like diabetes or Sjögren's syndrome.

How to help ease a dry mouth yourself


  • drink plenty of water - take regular sips during the day and keep some water by your bed at night
  • suck on ice cubes
  • chew sugar-free gum or suck on sugar-free sweets
  • use lip balm if your lips are also dry
  • brush your teeth twice a day and use an alcohol-free mouthwash at a different time to brushing - you're more likely to get tooth decay if you have a dry mouth


  • do not drink lots of alcohol, caffeine (such as tea and coffee) or fizzy drinks
  • do not have foods that are acidic (like lemons), spicy, salty or sugary
  • do not smoke
  • do not stop taking prescribed medicine without getting medical advice first - even if you think it might be causing your symptoms

A pharmacist can help if you have a dry mouth

Ask a pharmacist about treatments you can buy to help keep your mouth moist.

You can get:

  • gels
  • sprays
  • tablets or lozenges

Not all products are suitable for everyone. Ask a pharmacist for advice about the best one for you.

If your dry mouth might be caused by a blocked nose, a pharmacist may suggest decongestants to unblock it.

During the COVID-19 (coronavirus) pandemic, routine dental services have been stopped and GP services are limited. Only call your dental practice or your Health Board’s normal urgent dental care telephone number if you have a dental emergency.

Once normal dental services can resume, seek advice from your dentist or GP if:

  • your mouth is still dry after trying home or pharmacy treatments for a few weeks
  • you have difficulty chewing, swallowing or talking
  • your mouth is painful, red or swollen
  • you have sore white patches in your mouth
  • you think a prescribed medicine might be causing your dry mouth
  • you have other symptoms, like needing to urinate a lot or dry eyes

They can check what the cause might be and recommend treatment for it.


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The information on this page has been adapted by NHS Wales from original content supplied by NHS UK NHS website
Last Updated: 20/04/2020 10:59:37