ZCA Stack is the renewed version of ECA Stack. ECA Stack was the most popular product of the ephedra era, and now ZCA Stack has become one of the most popular fat burners at the current moment. They have reformed their formula, and interestingly enough, it took them years to come out with it.
The Good
They took their time in coming out with a new formula and therefore actually took the time to do their research and found out that their original formula, outside the ephedra, was quite perfect. So they found one other ingredient to replace ephedra and used it getting greater results without the side effects. Nobody thought this was possible, but obviously ZCA Stack has proven them wrong by just using Advantra-Z.
The Bad
The company history is a little bit tainted just because of the use of ephedra. But they have overcome this by becoming literally the only company to take their time and go back to the drawing board for real customer dedication.
The Skinny
We would highly recommend ZCA Stack. They are different than the others, and they have shown greater results than most imagined with any former ephedra product or for that matter diet pill in general. ZCA Stack has extended themselves beyond the norm to say the least, and they continue to amaze us with the positive consumer reviews and flat out results.