The NAF in the US ( I am in the UK) has a large website with a different slant to Ataxia UK.
There are several factsheets to download and one is about nutrition and Ataxia also a list of supplements. These are quite high amounts but if you are interested in this approach might be worth downloading for specialists and neurologists interested in this approach. If taking a multi vitamin and mineral then amounts in this need to be added to any other you take separately. So well worth taking expert advice.