Not too long ago I received a free sample of Fat Smack, it was a little pouch with a single serving (2 caps). I took one cap on separate days, each time it was extremely effective - the stim was great, the energy was awesome, etc.
So I ordered a bottle from Nutraplanet... I'm on day three of two (2) caps a day and I'm not feeling any effect at all, nothing like how I felt from the sample pack. Is this just my personal reaction to the product? What else could it be?