every morning i wake up i have a sore throat. my dr sais its cause i sleep with my mouth open but since then i have either forced myself to sleep with it closed or tape my mouth shut at night. is there any other way to stop these soar throats?

I always have a glass of water when I wake up. That helps. Buy a humidifier for your bedroom do u have allergies? buy a humidifier and try getting rid of all the dust.... Some published studies suggest that over 75% of Americans are chronically dehydrated. The effects of this will be most obvious in the morning because you've just gone several hours without drinking anything.

Drink more water during the entire day. Not just before bed. The effects of tissue rehydration might take days or a week or two to notice.