|
Comfrey is a plant. Even though this plant contains poisonous chemicals called pyrrolizidine alkaloids (PAs), some people use the leaf, root, and root-like stem (rhizome) to make medicine
Comfrey is a shrub that grows in parts of Europe, Asia, and North America. It can grow up to 5 feet tall. It produces clusters of purple, blue, and white flowers, and it’s famous for its long, slender leaves and black-skinned roots
The root and leaves of the comfrey plant have been used in traditional medicine in many parts of the world. In Japan, the plant has been harvested and used as a traditional treatment for over 2,000 years. It was originally called “knitbone” and people used it to treat: muscle sprains, bruises, burns and joint inflammation
Europeans have also used comfrey to treat inflammatory conditions, such as arthritis and gout
Despite safety concerns, comfrey is used by mouth for stomach ulcers, heavy menstrual periods, diarrhea, bloody urine, cough, bronchitis, cancer, and chest pain (angina). It is also used as a gargle for gum disease and sore throat
Comfrey is applied to the skin for ulcers, wounds, muscle soreness, bruises, rheumatoid arthritis, varicose veins, gout, and fractures
The chemicals in comfrey have wound healing effects and reduce inflammation when applied to the skin
The roots of leaves of the comfrey plant contain chemical substances called allantoin and rosmarinic acid. Allantoin boosts the growth of new skin cells, while rosmarinic acid helps relieve pain and inflammation. Extracts are still made from the roots and leaves and turned into ointments, creams, or salves. These solutions typically have a comfrey content of 5 to 20 percent
While comfrey is well-known for its health benefits, it also poses some risks. It contains compounds that can harm your liver. It may also be carcinogenic. As a result, many countries have banned the sale of oral comfrey preparations
Many experts also advise against using topical comfrey on open wounds
