I was just diagnosed with vitamin D deficiency about a week ago. My level was 29 and my doctor put me on 50,000 IU twice a week for 8 weeks. I've taken two doses so far, and each day that I take the vitamin D I feel worse than the days I don't take it. Completely exhausted, headache, mild nausea, etc. I feel better (well, comparatively better) by the next day, but I was just wondering if anyone else experienced that as well, and whether it gets better. I also notice that about 30 minutes after taking the vitamin D, my heart starts beating really rapidly and I feel extra nauseous, but that only lasts for about a minute. Should I be concerned about that?
I was intolerant to the 50000 vitamin D and experienced palpitations, etc. I found that taking vitamin D in gel cap form (most bioavailable) and gradually titrating up from a dose of 1000 IUs to 4000 IUs daily enabled me to raise my D levels from 20-54. However, it took a long time to do so.
Vitamin D has a bunch of co-factors that usually the docs forget to tell us about. The most important is magnesium. Vit D cannot work without also taking magnesium. Also, if you start taking megadoses of vitD without also taking more magnesium, you will develop a magnesium deficiency.
I had the same issue where I started to get better when I first got on the vitD prescription, but then things got worse. I read up on vitD, discovered the Mg link, started supplementing with magnesium and got better again.
Make sure to take a form of magnesium that the body can absorb, like Mg aspartate or citrate. Anything but magnesium oxide.
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