I have read in many journals and articles on the type of magnesium and the amounts one should take. First off it should be magnesium glycinate - glycinate is the key word here.
Also, many of us with IPN will take R-Lipoic Acid and, my research has indicated that you take this with Acetyl-L Carnitine as they work well with each other. You need to do some research to find the amount and timing.