Di, Yes I am on it. Have been since Feb2005. I am now on 300mg in a morning and 400mg at night (yes this is above the top dose). I had decrease in the shooting, pricking pains too. Made me groggy, then improved as got used to it. THis happened each time dose increased. I used to have a nap after the morning dose, but that is no ba thing.
Don't know what else to tell you....Brain like sieve ....just ask.

Love
Helen.

BTW - makes you snack is what I found...so put on weight.