Kank-A combines the maximum allowable level of anesthetic for fast, temporary pain relief, with a film-forming agent for long-lasting protection. Unlike most products which quickly wash away, Kank-A’s coating holds the anesthetic in contact with the sore and acts as a barrier against further irritation. Use this mouth sores treatment for temporary relief of pain due to canker sores, minor irritation of the mouth and gums cause by dentures or orthodontic appliances, or minor injury of the mouth or...