Though I am posting this for the diabetic and also people with sciatia nerve damage, I will also put in a few other forums that might find this herb of use.

I saw that they are doing a study on an herb Centella asiatica commonly called gota kola to see if it helps reverse diabetic neuropathy.

It may be good to start some now to help prevent this in the event the study shows it helps. It apparently was show to regenerate nerve cells in rats from sciatic damage. They believe this might help diabetic nerve damage and maybe even paralysis.

Doctors have no help for regrowing nerves and from getting nerve damage other than keeping blood glucose low so this could be very promising. I am going to try it for my parastesia nerve damage that stemmed from severe sciatica and also for the neuropathy I have from diabetes and for blood pressure and other benefits it has. I am excited as nothing has helped my nerve damage which is excruciating in the past 13 months.

I feel an organic tincture would be best as this is the best way to take herbs. The average tincture dose is 60 drops 3-5 times a day for a person of 150 pounds..if you weigh much more or less than that then see Clarks' rue for dosing on figuring out the dose

http://curezone.com/schulze/handbook/CAD.asp

For instance if you weigh 75 pounds you would take half 75/150 = 1/2 or 30 drops 3 to 5 times day.  If you weighed 300 you would take double or 300/150 = 2 which is 120 drops 3 to 5 times a day or weighing 225 would be 1 1/2 times the dose or 225/150= 1 1/2 which is 90 drops 3 to 5 times a day

If making your own tincture use cut and sifted organic or wild crafted herbs and 80-100 proof vodka. Make it so the top liquid part of the jar  when is settles is 25-50% fluid menstrum (alcohol) and 50-75 % solid herbs at the bottom..label it 5 years from date you strained it after soaking and shaking for at least 2 week though it will probably be good for at least 20 years more or longer. If keeping long term throw out if it dries out or gets moldy.

Gota kola also offers a number of other benefits including some for the diabetic. for one thing it improves circulation in the tiny blood vessels like capillaries and more found below at Wikipedia which is reproduced here and linked below I bold printed things it is used for.

Medicinal effects

Gotu kola is a mild adaptogen, is mildly antibacterial, anti-viral, anti-inflammatory, anti-ulcerogenic, anxiolytic, a cerebral tonic, a circulatory stimulant, a diuretic, nervine and vulnerary.[4][5]

Centella asiatica may be useful in the treatment of Anxiety and may be used as a promising anxiolytic agent in the future.[6]

In Thailand cups with gotu kola leaves are used as an afternoon stimulant.[7] A decoction of juice from the leaves is thought to relieve hypertension.[citation needed] A poultice of the leaves is also used to treat open sores.

Richard Lucas claimed in a book published in 1966 [8](second edition in 1979) that a subspecies "Hydrocotyle asiatica minor" allegedly from Sri Lanka also called "Fo ti tieng", contained a longevity factor called 'youth Vitamin X' said to be 'a tonic for the brain and endocrine glands' and maintained that extracts of the plant help circulation and skin problems.[9] However according to medicinal herbalist Michael Moore, it appears that there is no such subspecies and no Vitamin X is known to exist.[10]

Several scientific reports have documented Centella asiatica's ability to aid wound healing[11],[12] which is responsible for its traditional use in leprosy. Upon treatment with Centella asiatica, maturation of the scar is stimulated by the production of type I collagen. The treatment also results in a marked decrease in inflammatory reaction and myofibroblast production.[13]

The isolated steroids from the plant have been used to treat leprosy.[14][15] In addition, preliminary evidence suggests that it may have nootropic effects.[16] Centella asiatica is used to re-vitalize the brain and nervous system, increase attention span and concentration,[17] and combat aging.[16] Centella asiatica also has anti-oxidant properties.[4] It works for venous insufficiency.[18] It is used in Thailand for opium detoxification.

Followers of Sri Sri Thakur Anukulchandra commonly known as Satsangees all over the world take one or two fresh leaves with plenty of water in the morning after morning rituals. This is prescribed by Sri Sri Thakur Himself.

'There have been many reports showing the medicinal properties of C. asiatica extract in a wide range of disease conditions like diabetic microangiopathy, edema, venous hypertension, venous insufficiency (Incandela et al., 2001a; Incandela et al., 2001b; Incandela et al., 2001c). The role of C. asiatica extract in the treatment of memory enhancement and other neurodegenerative disorders is also well documented (Mohandas Rao et al., 2006). The first report concerning the antitumor property of C. asiatica extract was on its growth inhibitory effects on the development of solid and ascites tumor and that lead to increased life span of the tumor bearing mice (Babu et al., 1995). The authors also suggested that the extract directly impeded the DNA synthesis. In our study, C. asiatica extract showed an obvious dose dependent inhibition of cell proliferation in breast cancer cells'[19]

http://www.ohsu.edu/xd/about/news_events/news/2007-news-archive/10-3-ohsu-examines-effects-of.cfm

http://en.wikipedia.org/wiki/Centella_asiatica