While receiving a routine blood test, it was brought to my attention my vitamin D level was almost zero, even though my daily vitamin has more than 100% of the daily recommendation and i live in the Arizona sun six month a year. The doc immediately put me on a megadose. Right away I googled PSP and Parkinson's connection. Not sure I understood everything, but my question is, "Is the body of a PSP patient able to absorb or use this new dose?". Anybody have info on this?