Check out this article on when to take your supplements. I have always struggled with this. The key that works best for me is getting flavors that mix together well and drinking certain supplement powders in the same shake. I used to try to have 3 or 4 different Shakes and it was a lot to down right before or after my workouts and left me feeling bloated from all the stuff in my belly.
Bodybuilding.com - The Best Time To Take Your Supplements.: