The Comfrey plant is also known as Ass-Ear, Bruisewort, Knitbone, Knitback, Blackwort, Gum Plant, and Slippery Root.
GENERAL DESCRIPTION AND INFORMATION:
The Comfrey plant is a hardy compact perennial that grows up to three feet high from taproots.Its leaves are dark green, rough, and slightly hairy. Clusters of bell shaped white, cream, pink, or purple flowers are followed by small, hard, glossy black fruit.
In 2001, the United States banned all Comfrey-containing herbal products for internal consumption. Only preparations designed for topical use (where skin is unbroken) in treating bruises, swelling and some other skin conditions have been approved for sale in the United States.
This herb contains pyrrolizidine alkaloids, which have the potential to cause liver damage. It also contains an active agent, allantoin, which promotes the growth of new cells.