Hi Dear , Welcome to HCM. Understanding your concern. As per your query you have sore throat and excessive saliva . Well there can be many reasons for symptoms you mention in query like , but in your case it seems to me that the symptoms are due to acid reflux . I would suggest you to avoid eating spicy and heavy food specially at night , take light walk after every meal , take antacid after every meal and eat at least one hour before going to sleep . Consult gastroenterologist for proper examination . Doctor may order x-ray of digestive track , endoscopy of esophagus and ambulatory acidity test . Doctor may prescribe H2 blockers or proton pump inhibitor .Doctor may prescribe Glycopyrrolate (Robinul) for excessive saliva . Doctor may also refer you to ENT specialist if he/she find problem to be related with upper respiratory track infection . For now do warm saline gargles and maintain oral hygiene . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari