Ondansetron Combined with Dyclonine Hydrochloride to Improve Patient Experience in Unsedated Esophagogastro-duodenoscopy

Patients will take 8 mg oral ondansetron 2 hours prior to EGD process in addition to dyclonine hydrochloride mucilage to be gurgled 15 minutes prior to EGD process.

Patients will be instructed to gurgle 10 mL of dyclonine chloride mucilage (0.01 g/mL) and gurgle for 1 minute 15 minutes prior to endoscopic process.