Comfrey: I have added a link to the pharmaceutical-journal.
I hope that is alright.

https://www.pharmaceutical-journal.c...irstPass=false

As far as personal uses, I have taken it in a sweat by boiling leaves and
adding it to the water that is poured on the hot rocks.
Also covered the ground of the sweat lodge for people to sit on.

It is good to wrap up injuries for healing.
I think it is a wonderful plant.

Herb:Osha root/Bear root