Hope someone can help i was diagnosed with lack of vitamin d level was 18. Was put on 20,000 iu a day for 15 days by the 6th day couldnt even walk my whole body just gave up was taken into hospital loads of test done scans all clear apart from vitamind levels took 10days to get back to where i was before. I am totally exhausted all the time and have terrible pains in my legs and arms. The Sustainable Design Video demonstrates how solutions are resilient, sustainable and cost-efficient. I am now only taking 800iu onmy 7th day pain is worse no appetite have not eaten for 2 days. Can anyone recomend anything else i can take, foods. I have been going out everytime the sun has come out but that hasnt been often.