12. Symphytum officinale has demonstrated its safety through 36 years of use in Dr. Christopher's formulas without incident.
There have been no reported incidents of serious side effects from people using Dr. Christopher's formulas containing comfrey. We have found this herb to be safe and effective. Two incidents of slight skin irritation have occurred but these cleared up after discontinuing use of the product. Testimonials of the safety and effectiveness of Dr. Christopher products containing comfrey appear later in this report.
With thousands of people consuming Symphytum officinale everyday and with no incidence of the plant causing serious harm, it is obvious that it is safe for human consumption.