I posted a while ago about vitamin D as it relates to balance. My balance was getting particularly bad and I was getting very concerned, then I began taking Vitamin D and overnigiht my symptoms began to improve. You may want to get your V. D level checked but I would not wait to begn taking it. It takes a while to build up your level, so if you want quick results I would begin taking at least 10,000 iu per day. You could take 50,000 iu per day if you like. Almost all PWP are vitamn D deficient. Google "vitamin D and neurology".