How fast did the negative effects appear when you were taking 20k/day? What were they?
And how fast did you notice positive effects as you changed dosage?
Serious negative effects are supposed to take months to appear, even at 100k/day.
Negative effect: The metallic taste one, that day; I backed right off. Positve effects: within a few days.
P/S/A: There are single sentences which can create life-changing amounts of difference.