Things to look at for diabetic support/ PN are:

Methylcobalamin B12
r-lipoic acid (to stabilize blood sugar and cellular mito functions)
acetyl carnitine (to increase metabolism of fatty acids in mito)
chromium (to stablize blood sugars)
Benfotiamine (a form of thiamine to help the nerves)
magnesium (diabetics lose this mineral in the urine)
inositol (diabetics lose this also).

We discuss these at the PN forum fairly often. You can search them and read the posts.

One really has to read the posts that accumulate here. There is no way around that. I only put up suggestions that are backed by scientific studies.

At the top of this page on Vitamin is a sticky thread (which does not move), with links to several very common supplements which many people need to learn about. The subjects are large, and there is much to learn from those threads.

You will want to also investigate Vit D and have your level tested. Poor Vit D level is connected to diabetes. The link is in the sticky thread.

Welcome to NT... with patience, careful reading you may change your situation. You must read, and do so carefully, if you are to assume responsibility for some of your own care and issues.

Some people have PN because of life style (drugs consumed, alcohol) or diet (gluten intolerance or other food allergy). You may need to look at these factors too.