Our bodies are designed to go into starvation mode when our diet is drastically cut. This means that when we cut calories too much, our body ends up storing all the fat we're trying to lose! Fad diets, pills, and starvation does not work for the long haul. Sure, you'll be a size six for a few months, but then you'll gain the weight back (and usually more) very quickly.
I think instead of doing the easy thing, learn how to eat the right way, exercise, and deal with the fact that our bodies will do what our genes decide. Have you checked into Weight Watchers or eDiet? Knowledge, exercise, and learning to deal with the fact we cannot look like Nicole Kidman is the key. Starvation and speed will just mess up your body in an unhealthy way, which leads to bone mass loss, organ damage, and mental problems.
Learn to eat properly and exercise and throw those pills away! Please don't pull a Hollywood diet or you'll just regret it.
Good luck! I'm learning what I preach, just so you know. I'm about 25 pounds overweight, I feel like crud because all I eat is junk, and I don't exercise. Guess what my new year resolution is. :)