If you don't have problems with anxiety or other serious medical issues, then go for it. Just start of with a small amount at first to see how your body reacts to it.
I've taken that combo before and my mind was all over the place. I couldn't concentrate on my lifting at all.
most people that had serious problems had some other type problems like heart disease -high blood pressure things of that nature - in those cases by all means DO NOT take any ECA stack