The raw potato and skins also contain chaconine, which is toxic and can cause irritation to the digestive tract, nervous system symptoms (tremors), and kidney function disorders. (wagwalking.com)
Potatoes contain glycoalkaloids, toxic compounds, of which the most prevalent are solanine and chaconine. (sciencedaily.com)
Potatoes naturally produce solanine and chaconine, a related glycoalkaloid, as a defense mechanism against insects, disease and predators (humans included). (westonaprice.org)