I do and I honestly think it helps me when I work out. I don't really feel the test is an energizer as such, it more likely helps recovery which helps you perform better next time.

As for overloading etc, I've never noticed any (bad) effect over and above that which a pre workout normally does. No blood pressure issues etc

I presume you will be monitoring your health etc anyway when 'on', so that should throw up any issues.

I'd just try it with and without and see how you feel.

My tuppence worth.