Bottom Line: There is no evidence to support use of Stillingia to treat cancer, infections, or other medical conditions.
Stillingia is a root extract. It is known to contain chemicals called diterpene esters, toxic irritants that can cause swelling and inflammation of the skin. One laboratory experiment suggested that diterpene esters can halt the growth of cancer cells, but this has not been confirmed with stillingia root.
Derived from the root of the plant, this supplement is used to treat syphilis, bronchitis, constipation, hemorrhoids, skin conditions, and is an ingredient in the Hoxsey herbal therapy, used as a cancer treatment.
Stillingia contains diterpene esters that cause mucosal irritation and skin eruptions. Other reported toxicities include vertigo, diarrhea, nausea, vomiting, muscle ache, pruritus, cough, fatigue, and sweating. No clinical data support the use of this supplement for any proposed claim.
Significant toxicity can occur following administration (1).
Stillingia has not been evaluated for any proposed claim. It contains diterpene esters, toxic irritants that can cause swelling and inflammation of the skin (1). In vitro research suggests that diterpene esters may have antitumor activity (2), but this has not been confirmed with stillingia root.