Unlike most radishes, black radish (Raphanus sativus) is grown for medicinal purposes rather than as a food. This root is hot and pungent, white inside with a thin black skin.
The black radish is very high in sulfur, potassium, iron, and magnesium.
Traditionally, black radish roots have been used in Europe as a gastrointestinal stimulant, bile duct cleanser and choleretic. Black radish root powder is often used in formulas for the liver, gall bladder and digestive system.