Hey Batch, I am still having 1 to 2 hits a day but thankfully they are at night and I'd take night headaches over one during the day while I am at work.... Admittedly I am on what I think is the old D3 regimen that consists of (x2 D3 @10,000 I/U, x1 magnesium citrate @250mg, x1 calcium @600mg and x1 fish oil @1200mg) and unfortunately I haven't had any labs drawn for a while but about 6 months ago I did and they were fine