--but since I'm up early this morning, I would suggest you look into possibly supplementing with both magnesium (not an oxide form--that tends not to be absorbed well, but DOES tend to give one the runs, as it is rather laxative--but a chelated or citrate/malate type), and possibly lipoic acid, which is a potent antioxidant and has been used for many years in Europe as both a blood sugar regulator and neuropathy symptom lessener. One can try either the original alpha lipoic acid form or the more recent R-lipoic acid (which is composed of only the biologically active right-handed molecular isomers of lipoic acid, so one can normally take less R-lipoic to get a similar effect to larger doses of alpha lipoic).

Both of these are quite inexpensive and are available as supplements through both regular nutrition or drug stores stores (and even at Wal-Mart and Target for the most part) and on-line (many of us use iherb.com or swansonvitamins.com). I don't recommend any particular brands of these, though I am partial to those manufactured in Canada, as I think there is more regulation and quality control there.

Do not expect the effects to happen overnight; they are gradual. But it is known that diabetics tend to excrete magnesium, which is vital for proper muscle contraction functioning, more than non-diabetics, and that many people on the standard Western diet tend to have less than optimal levels of magnesium (magnesium deficiency is likely more common than either calcium or potassium deficiency, though the latter two receive more publicity).

The course of diabetic neuropathy, unfortunately, is highly variable. Having one's blood sugar under tight control is a prerequisite for stemming the progression, but it doesn't always help everyone equally. Making sure circulatory issues are addressed is also necessary, and one should still be checked for other conditions which might be contributing. In particular, diabetics are very prone to "double-crush" syndromes, in which diabetes makes a compressive dysfunction of nerve tracts worse, and produces symptoms out of proportion to the sum of the parts.

See:

http://neuromuscular.wustl.edu/nother/diabetes.htm

http://www.ncbi.nlm.nih.gov/pubmed/10531704

http://care.diabetesjournals.org/content/27/7/1783.full