A dry mouth is rarely a sign of anything serious. There are things you can do to help ease it yourself. See a GP if these don't work or you also have other symptoms.
The main causes of a dry mouth are:
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.