I've used HREx for 3 months.
It does have A LOT of caffeine, however not sure on the whole fat loss thing. I have leaned up a bit, but not sure how much of that is from the HREx. If I take 5 or 6 or more pills a day it makes me pretty anxious and quick tempered.
I would only take on training days. Cycled off of it for two week. I was on for 1.5 months, off for 2 weeks then back on for 1.5 months.
Pros:
It keeps you alert.
It's only 19.95
Cons:
A LOT of caffeine vs not a lot of fat burning agents.
Thought I would have greater weight loss results.
Mood Swings.
OVERALL:
I guess I would only say try this if you want a caffeine rush. But, I'm not satisfied.
Future:
Adding Fenterdren to my supplements this week and will keep you posted.
AFFILIATIONS:
I don't sell supplements or knows of anyone who sells supplements - So, I have nothing to profit if you try these products.