250iu 2-3x a week.
Get blood work done after 6 weeks and see what everything is doing.
"My car isn't driving like it used to" well it mayb3 because its 10 years older, and needs to be plugged into a diagnostics to see.
Also, is your diet as good as it used to be, is your stress as low as it used to be, is your sleep as good as it used to be?
