Fist of all, let me tell you how relieved I am to have found this forum. There are people out there that are going through the same thing as me! I've been feeling like I'm completely crazy. About 6 months ago I started to feel sick everyday. Fatigue, dizziness, night sweats, lightheadedness, achy muscles etc. I already suffer from anxiety, so of course I had diagnosed myself with everything from cancer to Lupus. I sent myself to the ER once because I was sure I was having a heart attack (it was the anxiety). They sent me home, telling me that everything was okay. I thought I was losing my mind. How could everything be okay when I feel awful every day?! Prior to this I was a healthy, energetic, fun carefree girl. I went back for a follow up with my GP. They did a lot of tests on me including chest x-ray, ekg, thyroid, and extensive blood work. Everything came back normal besides my Vitamin D. My level was at a 15! My doctor said that could definitely be the reason for my symptoms. Just a week ago he prescribed me vitamin D3 50,000. I have only taken it once and obviously am not feeling any better yet. Does anyone have any success stories with raising their vitamin D and feeling better? How long did it take before you began to feel like yourself again? Any support would be greatly appreciated.