A dry mouth is rarely a sign of anything serious. There are things you can do to help ease it yourself. Contact your GP if these do not work or you also have other symptoms.
Causes of a dry mouth
The main causes of a dry mouth are:
- 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
- cancer treatment – radiotherapy or chemotherapy
Sometimes a dry mouth that does not go away may be caused by a condition like diabetes or Sjögren's syndrome.
How to help ease a dry mouth
drink plenty of water – take regular sips during the day and keep some water by your bed at night
suck on ice cubes or ice lollies
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 alcohol-free mouthwash – 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 a 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:
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.
When to contact your GP
Non-urgent advice: Contact your 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 have any patches that do not heal
- you think a prescribed medicine might be causing your dry mouth
- you have other symptoms, like needing to pee a lot or dry eyes
They can check what the cause might be and recommend treatment for it.
Content supplied by the NHS and adapted for Ireland by the HSE