I have low vitamin d (lab test was 20), and started taking 5000 daily about one month ago. I read today about some symptoms online and wanted to see if those are in fact true symptoms, and if so, how long it would take to get my levels up. My symptoms are fatigue, muscle and/or joint pain, rash and itching on my head, crabbiness and depression. I was dx d with osteoporosis after testing, and my doc checked my vitamin d level at that time. We stopped my Rx for fosamax after a month to see if the aches and pains were any better, and I am to resume the Rx in another week. I haven t noticed a big change in my symptoms since stopping the Rx. Thanks! Nan