I use 500 mg of magnesium and I am out like a light for the night. But I would not use in combination with the combination that you are using. Only the magnseium. You can try with 400 mg but do not take more then 500 mg anight..
I need the 500 mg a night. It takes about 15-20 minutes to kick .
Plus it will help clean out your bowels in the am really good.