Hello, 10 days after an endoscopy developing sore throat , ,,endoscopy does not seems to be the cause of throat problem. But reflux could be . Acidity , heart burn are one of the reason causing Laryngo pharyngeal reflux in the night time and should be treated aggressively--- Take-- Antacid tablet ---- proton pump inhibitors with domperidom Syp. antacid gel 2 tsf two times a day half an hour before meals Keep head end of bed elevated. Avoid alcohol, Smoking Do brisk walking daily Go for walk after dinner Avoid spicy food Avoid late night coffee avoid constipation follow up after 7 days.