Hello. My doctor did a 25(OH)D and other tests on me in August, after I had been on a Centrum Silver multivitamin with 500 IU of Vitamin D since my seizure in May. I have only been indoors with curtains closed since then, but eating healthy. Because my results came back 33.1 and he's happy with over 32, he didn't put me on 50,000 IU ergocalciferol pills. I have started one Carlson 2,000 IU Vitamin D3 soft gel per day and will test again at the end of winter. I also started one 200 IU tablet of Carlson Chelated Magnesium daily with that, and he started me on Lovaza fish oil. Good luck on your results.