What dosage of D3 is good to take? I know some people take large amounts, but the stores tend to carry 400-2000 IU. As for magnesium, we do supplement that in a chelated capsule. Does taking elemental magnesium, like magnesium chloride provide the same benefit, or does it need to be chelated to provide the benefit (chelated is hard to find in the store). I don't think there's much chance of me getting hubby to use the foot bath too often!