I have found that out today that I am vit d deficient and wondered if anyone had some advice on how to tackle this problem. My reading is 19 which as far as I understand is quite low. My gp's advice was to just take a good quality multi vit but on doing some research of my own I see that this is not sufficient to raise the levels. He said that there isnt any supplements that he can prescribe, there was only an injection that was not liscensed for use in the uk. Any input to unravelling this would be much appreciated.