I take 100mg of the stabilized form too. I think it works.
Some of the charts I found on the web showing absorption, show the R-lipoic stabilized is far more absorbed than the old ALA.
http://www.geronova.com/node/61/doct...?theme=retzone
The Doctor's Best form has this trademark on the ingredients panel, in tiny print.

As the months pass...it seems to work slowly for me... I FEEL better, more alert, etc. I haven't had burning in my feet for a while now either.
My hands and feet are not as cold as they were last winter.
My A1C came down, but my fasting morning sugars are still a bit up. I may try adding another 100mg later in the day.
Taking 200mg all at once didn't agree with me and...made me irritable.
But perhaps dividing it up will work?

I was using another R-lipoic product, from SourceNaturals, and I guess it wasn't working as well (does not say stabilized on the label). We learn something everyday here! (including me).

I also use 150mg of Benfotiamine daily... and this combo may be also part of the reasons for my responses.

I take my R-lipoic on an empty stomach first thing in the morning.

Over the past decade these are the nutrients that have been improved upon, to deliver better response for people:

R-lipoic (improved Alpha lipoic acid)

Methylcobalamin (improved activated B12 (cyano synthetic) ))

P5P ( activated pyridoxine B6)

Benfotiamine ( improved longer acting thiamine B1)

Bioenhanced curcumin (improved over 95% extract)

Ubiquinol (improved CoQ-10)

Zinc monomethionine ( zinc sulfate which is very upsetting to GI)

acetyl carnitine (better absorbed than L-carnitine)

magnesium chelates (much improved over magnesium oxide)

I am running into a blank, at this point... too early in the morning I guess?