Thank you both. My numbers are quite low, so perhaps I should take more, say 5000? Or would 3000 be sufficient? I noticed on the D thread you or perhaps others recommending or noting that in studies they gave patients 50 000 or so? That seems excessive.

I wish I could get more sun, but not here and in the winter. In about a month I should be in Florida for a week, so I'll make sure to soak it up.

I wonder whether my SFN is linked to such low D levels. I do have all sorts of joint and muscle pain and muscle twitching.