"Fred's Mother" has some very good advice, BUT I would not go to a health food store for a multivitamin pill. The clerks there do not necessarily know what they are doing, and they will load you up with a bunch of isolated bottles. That is NOT how nature devised nutrition to work. Moreover, pills are only absorbed about 20-30% even in people whose systems are working perfectly, which yours is not. As proof, put a vitamin or supplement in a bowl of white vinegar and wait 20 minutes. Whatever is still left is what is NOT dissolved in your stomach and which will then pass through your intestines unabsorbed! Useless, and a waste of money. And what did you absorb - a balance of what was in it, or only the outer coating or wax and shellac they put it in to help it pop out of the mold?
And where are the products manufactured? Under what conditions? Are the raw ingredients quarantined and tested independently?
The American Medical Association recommended, in 2002, that everyone take a supplement, and that liquid supplementation is best. It's much more highly absorbed. Pre-mixed liquids lose potency the longer they sit around, so a powder that is mixed at the time of consumption is best.
I would suggest you get more info on GlucAffect from Reliv International. It has had clinical trials (with a control group) showing a 30% reduction in fasting blood sugar as well as an average 16 pound weight loss among test subjects in 8 weeks. It is manufactured in the US under strict, near-pharmaceutical grade conditions, but it is entirely a food product with no drugs or chemicals. It is the blend of ingredients that is key - not the individual ingredients. Some blood sugar control product you pick up in a store is not going to give you the info, and the company is not going to give you the support or the guarantee.
You can live with diabetes that is getting worse, now with nerve damage. You can think about disability, but your life will just go downhill. Is that what you want long term?