Yeah it's seriously awesome!! I've used it extensively for incredible healing.
We grow comfrey. I'm not sure if you can get the whole plant at the grocery store because I don't shop at them, but I do know there are all kinds of creams and salves and whatnot on the internet.

If you have a neighbor or friend who has a plant, the best option is to get a piece to plant yourself and then you'll always have it on hand! For a broken bone or bad sprain or contusion, you just mash up the root in like a mortar & pestle, maybe add some leaves if you want, and apply it topically right on your wound.

We make a comfrey tincture and could send you some for an SBD donation. It's a concentrated extraction of fresh comfrey leaves, and you use it topically too.