My husband drinks ice water which seems to help but he also drinks plenty of milk with ovaltine or chocolate syrup mixed in it. It seems to help coat the inside of his mouth, since he also suffers from dry mouth, mouth sores...you name it. But he also used the Biotene Oral Jel especially at night - which seems to help a great deal as well. We live in an apartment in Ohio and the winter here has been colder than usual this year, which means we have the heat cranked up pretty high. I hate to turn down the heat because he gets chills then, so maybe a humidifier is also the way to go.