I still disagree with the results over the comfrey issues. They found that large doses fed to lab rats, over a period of time, caused liver damage. These studies, when done this way, cannot be trusted as NOBODY takes in comfrey in those kind of doses to begin with. A comfrey tea every now and again can be good for internal disorders. But if you wolf down an entire plant every night for two weeks, yeah you're going to see some issues. Just like with any other food item or herb.

The history of comfrey is really interesting. During the Irish potato famine it was used as a good crop for the farmers, people ate of it and it saved their asses. Comfrey is also good for the soil. Many composters use it to compost with as it puts valuable nutrients back into the soil. Not only that the taproots loosen up clay soil like nothing else can. A pounded out leaf of comfrey moistened and put on open skin wounds will cause bleeding to stop almost instantly.

So yeah, comfre in large mega-doses can be a problem. But then again eating just two nutmegs can kill you as well.

Anyway end of rant. I'm a huge fan of comfrey I have russian comfrey and regular old american comfrey growing in my garden. I love it