I personally have not tryed this product. Sounds like your basic ECA stack / therogenic product. Some folks have good luck with these and others do not.

I used to drink several cups-o-coffee thruout the day and have omitted them completely now. (Well, every 2-weeks, a half a cup)

My sister has been on Aktins for close to a year now, and never stopped drinking coffee and has lost a LOT of weight.

Think it just depends on the person and how they react to it.

Just my 2-cents.
Cheers , John