Today I took one, four times. Is that too much, not enough???
I'm not sure what the dosages of Stacker 2 are. If you want to save some money, do some research on EC stacking. (Ephedrine HCl & Caffeine). I'm sure that's what is basically in Stacker 2's. Some people recommend adding A (Aspirin) some people recommend adding Y (Yohimbe HCl).
I've done EC stacks, ECA stacks and ECY stacks. EC seems to work the best for me.
Here's a link that might be of some use to you. I used the dosages in the article below.