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Not sure I’m posting to the general thread...very timely discussion. I just began megadosing to get me up to what doctor prescribed a few years ago. I’m 61, female, and overweight so it may explain why I have often tested with a deficiency (less than 20) and not just low. Feel tired all the time, muscle weakness (I thought it was lipitor). So I will take 50K IU every few days for a few weeks, then drop to 5000 IU daily.
Any opinions? How long has it taken to build up sufficient amounts? I also live in South FL, so am certainly getting enough via sunlight.