MuscleTech has a product called Hydroxycut Hardcore I know of several people who have tried this with some good results,

Here is some information about this product:

MuscleTech™ researchers invested millions of dollars in state-of-the-art clinical investigation, human trials, and laboratory analysis developing the breakthrough product you hold in your hand. This groundbreaking R&D effort resulted in a complex so powerful, it is unquestionably the fastest, most effective fatburning formula ever created! Welcome to Hydroxycut Hardcore!