i've had solid results just drinking from a gallon of water a day. i put 5g of mono in it in the morning and finish it by mid evening, then drink more water throughout the night. i've considered doing pre and post but its just easier to throw it in the gallon of water i intend on killing anyway.
the only reason this may not be as effective is out of the 5g you're probably only utilizing 2g, therefore, with the dose drawn out throughout the day you may not absorb what u need. but, as far as i can tell, it has worked well.