Kanka

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It has been suggested that this article or section be merged into Benzocaine. (Discuss)

Kank+a is a gel-like 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.