Hello
it could be caused by a number of things. Does your bedroom have air con? Air con sucks the moisture out of the air .Some things to try would be limiting the AC and humidifying the room. Put out a wide mouthed bowl of water near your bed. If all else fails, you could try a humidifier. Does the sun shine into your room in the morning? This could also dry the air out. You also need to drink plenty of water through out the day and keep a glass next to you on your bedside table for you to sip if you need it during the night. Things like spicy food can also dry the mouth out. Certain Meds can also make your mouth dry. Alcohol sure does give you a dry mouth. I get this with booze.

Acid reflux can cause a dry mouth too.There are many other illnesses too that can make your mouth dry such as diabetes and hypertension. You may even have problems with your saliva glands and levels. Having good ventilation where you sleep may help. Going through the Menopause can cause a dry mouth too for ladies. Smoking and lifestyle can play a big part too.

If this does not get better you may have to visit your dentist as a dry mouth can cause tooth decay as saliva is what fights tooth decay at night and during the day. An oral rinse to restore mouth moisture may be prescribed. If that doesn't help a medication that stimulates saliva production, called Salagen, may be prescribed.

Also if you do not do so already, look after your teeth and gums by brushing 2 times a day and flossing once a day.

Hope you find the cause soon or get better and good luck.

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