After many years of personally searching for that perfect drink to alleviate the dreaded cotton mouth. I have found that during the day time, before sunset, Chopin Vodka Cuban Martini's relieve any dryness of the mouth better than water or any beverage on thye market today. And at night after the sun goes down, a good Scotch on the rocks works wonders on ones mind, body, soul, and cotton mouth.
Always remember, vodka (clear) during the day, and scotch (dark) at night.
I hope this helps you in your search to find the right beverage that best suits your needs.
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