I'm using one level teaspoon, which based on what Balanchine said, is a probably in the neighborhood 4 - 4.5 grams or thereabouts. I tried it again last night as my feet and temples were burning worse than the night before, and I wanted to see its usefulness at that level of discomfort.

It took care of the burn beautifully, but when I got one of those nerve zingers, it was loud and proud. So as I think icelander mentioned, it might not help with nerve pain. Thankfully I don't get a lot of the zingers anymore.