Thanks everyone, I'm really pleased to read some of you got immediate effects with supplementation, and hoping the same will happen for me.

I got told to take the 1000 dose, which is the higher one, and that there was no need to be retested. I'm confused by this because how do I know a) it's worked and b.) if I should either stop taking the Vit D or go on a lower maintenance dose after the deficiency is corrected.