This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (July 2009)

Kank-A is a liquid pharmaceutical product marketed by Blistex used primarily to treat canker sores. It is applied directly on the sore and works by numbing the local area (with benzocaine) to prevent discomfort and forming a protective mucous barrier with a compound benzoin tincture that protects the ulcer from further irritation, allowing it to heal more rapidly.

This product article is a stub. You can help Wikipedia by expanding it. v • d • e

means also crazy, hot