3. Nasal Congestion
As already mentioned, if your nose is stuffed up, then you will be forced to sleep with your mouth open. This congestion can be caused by cold or allergies and everything in between. There are medications that can help with allergies and also alleviate stuffy noses, however, make sure to consult your doctor before taking them. These conditions are, after all, temporary, and therefore so will be the drooling. It is not always worth it to take medications just to stop something that is not really affecting your health and vitality and that will stop as soon as your cold clears up or allergy season passes.