1. Topical anesthesia and lubrication for 

 1) Cystoscopy, catheter insertion, bougie method, and other urethra of men and women during  intraurethral surgery

 2) Nasopharyngeal cavity during endoscopy such as gastroscopy and bronchoscopy

 3) During proctoscopy

 4) Intubation

2. Pain relief of cystitis and urethritis