Specialized in Aphthous Ulcers and other mouth sores, stemming from autoimmune, stress, hormones, injury, allergies, and citric acid.The Canker Spanker is a unique alternative to topical products for oral cankers and cold sores. It has been shown to reduce overall breakouts by 75% if taken daily and decrease healing time by 75% if taken anytime during a breakout. Individual results vary.Native American Woman Owned and Operated.We believe that cankers and cold sores are annoying, embarrassing and can be extremely painful. The Canker Spanker was developed by a chronic canker sufferer after years of unsuccessful doctors visits, experimentation, and prayers.