I'm aware of the differnet grades and my friend has used this particular brand for many years.

I applied the treatment to my feet, calves and thighs about an hour ago and it seems to be working. My feet (which are usually my worst pain) are still probably 50% of normal pain, but my legs feel very good.

The stuff is kind of messy because of it's texture, but I'm sure I'll be able to find the best way to apply it after some trial and error.