Doctor Ice is a combined medicine for mouth ulcer. Choline Salicylate and Lidocaine. Choline Salicylate is a non-steroidal anti-inflammatory drug (NSAID). It works by blocking the release of certain chemical messengers (prostaglandins) which cause pain and inflammation (redness and swelling). Lidocaine is a local anesthetic. It works by blocking pain signals from the nerves to the brain which decreases the pain sensation.
Apply it over the affected area with a clean fingertip, three to four times a day or as directed by your doctor.