There is a thread here on Vit C-- high dose:

http://neurotalk.psychcentral.com/sh...hlight=Vitamin

Vit C also shows promise in preventing RSD in studies from Europe, from surgeries or trauma to the foot and wrist. So it is worthy of looking at.

I'd get tested for B12 and Vit D to see if you are low in either.
In US you should be at 400 or above for B12.. Don't accept "normal" from the doctor because lab ranges have not caught up with the new treatments, and they still report very low values as "normal"...and many doctors are not up on the new
information.
http://www.aafp.org/afp/2003/0301/p979.html
Also many doctors do not know about active B12, and still use the synthetic cyano form which is not converted well by many people to active in the body.

Don't accept RX D treatment with D2, because that is outdated too. D3 is what you will need. approx 1000IU D3 for every 10 US units to raise. The new low normal is 50.

Vicc (poster from the past) was having good results with grapeseed extract also which is inexpensive. You'd need 200-300mg of that.

If you choose lipoic acid, do the new improved form, NaRALA which is stabilized and purified. This allows for only 100mg a day and is better absorbed. Best to take on empty stomach.
If you do the OLD ALA...racemic mixture type you'll need 600 to 1800 mg a day. Also take on empty stomach or lose 30% of your absorption.
Doctor's Best makes an affordable stablized R-lipoic and we on PN mostly use it now.

Magnesium should be a chelated form, and NOT oxide type. The OXIDE is not absorbed.

If you decide to take B12, you'll do best with 1 to 5mg a day, of active methylcobalamin (available easily and inexpensively on the net). Take this also on an empty stomach for best absorption. Very low testing, will respond well to 5mg daily and once you are back up to a normal level (many of us at PN keep ours at 1000), you can do 1mg a day or 5mg twice a week.