Definitely have vitamin d use monitored by a doctor - I have low vitamin d (it is now very common in many sectors of the population, not just those of us with PN). I now take one vit d tablet a month to maintain my vitamin d levels in the normal range (I originally had to take them more frequently to increase my level, then I went on to one a month for ever more). I just take it on the first of each month, and I have my vit d levels monitored from time to time.

For me it is vital for my bones as I am on long term steroids so bone protection is essential (also on a biphosphonate and cyclic calcium). Haven't noticed any difference with my PN since my vitamin d level came back up but it's sure good to know that my bones can maximise their use of the calcium in my diet (dietry and supplemental) now my vit d levels are good.

cheers

raglet