I've started taking something called "Inferno Thermogenic" tablets. They are pretty similar to Hydroxycut. I took them on Tuesday before I went to the gym and they are pretty effective. I felt like I could breathe far easier and I had more stamina to keep on running where normally I would have given up.

The only down side is I sweated buckets and I couldn't sleep very well, but apart from that they weren't too bad.