Magnesium Hydroxide Dosing

[A. squamosa]

Hi all,

Used to use a nice pure milk of magnesia which is no longer available to me, have now switched to using magnesium hydroxide powder to create magnesium bicarbonate.

However I also used to sometimes use milk of magnesia as a laxative, I prefer it above cascara etc. Is it possible to use magnesium hydroxide powder like this, and if so, how much is the safe/sufficient/effective amount for a laxative effect?

Thanks!