I don't think it did much for energy, but my temp went up a degree and a half.
So I guess it works, but the over feeling was kind of slowed down.
I thought I might have been tired so I tried to take a nap.
Then an hour and a half of tossing and turning ensued.
I guess I'll try the full dose again tomorow and give you guys a better opinion.
However, if you are only looking for a metabolism booster, than the 1.5 rise in my temp is a **** good indicator.