Botanical atlas

Milk Root

Xysmalobium undulatum

For generations, traditional healers among the Zulu, Xhosa, and Sotho peoples of southern Africa dug the tuberous root of this grassland plant and brewed it into a bitter decoction for stubborn diarrhea and dysentery. Its milky sap and gnarled root made it easy to recognize among the region's healers, who passed the knowledge of its use down carefully, aware of its strength. In the early twentieth century, German researchers studying the root isolated its active cardiac glycosides and turned it into a standardized pharmaceutical extract that is still sold in some countries today as a tightly dosed, over-the-counter treatment for acute diarrhea. That journey from veld to pharmacy shelf makes milk root one of the few southern African traditional medicines to become a mainstream regulated drug, precisely because its potency demanded that kind of care.

In tradition.

For generations, traditional healers among the Zulu, Xhosa, and Sotho peoples of southern Africa dug the tuberous root of this grassland plant and brewed it into a bitter decoction for stubborn diarrhea and dysentery. Its milky sap and gnarled root made it easy to recognize among the region's healers, who passed the knowledge of its use down carefully, aware of its strength. In the early twentieth century, German researchers studying the root isolated its active cardiac glycosides and turned it into a standardized pharmaceutical extract that is still sold in some countries today as a tightly dosed, over-the-counter treatment for acute diarrhea. That journey from veld to pharmacy shelf makes milk root one of the few southern African traditional medicines to become a mainstream regulated drug, precisely because its potency demanded that kind of care.

Safety.

Milk root's cardiac glycosides make it dangerous to eat as a raw root or home preparation, capable of causing nausea, vomiting, and life-threatening heart rhythm disturbances. It is especially risky for anyone with heart disease or taking digoxin or other heart medications, and it must be avoided during pregnancy, breastfeeding, and in children. Never gather, dry, or prepare this root at home; regulated pharmaceutical extracts are dosed under strict medical control and are not comparable to a home tea or tincture.