ATTENTION  

Comfrey should be a considered an over the counter medication when used for human and animal health and beauty care. This is because Comfrey, when used as an external health and beauty aid, is absorbed through the skin when applied. The absorption of Comfrey into the body, as with any medication, has the possibility of presenting both positive and negative outcomes. It has its benefits as well as possibly having side effects. Side effects can range from being minor - like causing a mild rash, to dangerous - like sealing in infection, liver damage or some cancers.  So treat Comfrey with respect and adhere to proper usage.