Does anyone feed their chickens comfrey? I read this article while researching about the comfrey that grows in my yard, http://www.motherearthnews.com/Organic-Gardening/1974-05-01/Plant-Multipurpose-Comfrey.aspx?page=4 But I also read articles that the FDA in recent years ordered all the "human" comfrey containing supplements pulled off shelves. The studies they sited do seem flawed as they only used a concentrated form of the offending alkaloid that is in trace amounts in comfrey. Is it just big brother trying to get rid of what was appearing to be a cheap wonder plant? Or is comfrey harmful? Can anyone add to my confusion?