Comfrey

Comfrey's main active constituents

Allantoin (0.6-0.8%).    Roots contain higher levels than leaves

 •   Cell-proliferant (increases cell multiplication rate).   Promotes the granulation and formation of epithelial cells (especially fibroblasts) - these line the surfaces of the body. E.g. skin, blood vessels, intestines, urinary tract, organs, esophagus. Can boost growth of skin cells and so has a vulnerary effect to heal skin problems, wounds, sores, burns;

•   Leucocytosis promoter.    Increases number of immune system white cells to speed healing.

•  Collagen-builder.    Rebuild fibrous tissue (bundles of collagen fibers interspersed with row of connective tissue cells), such as tendons, ligaments, and repair bone fractures;

Rosmarinic acid  and steroidal triterpene saponins

•  Anti-inflammatory / reduces pain and swelling.    Useful for rheumatoid arthritis, sprains, bruises (incl. contusions);

Mucilage (mainly in root, up to 29%).   This emollient polysaccaride moisturizes and  soothes tissues, strengthening the mucopolysaccaride beween body's cells after damage from such as sunburn or burns.

Silicic acid and tannins (astringent - 2.4% in dried leaves), inulin (converted to fructose)