I tried this and it really didn't do much for me.. At all.. Aside from having to go to the bathroom all the time because of all the water you're required to drink with it. So if you're losing weight, it's probably water weight.
Horrible experience. Went there with my friend (the bride) and her other bridesmaids to get our bridesmaids dresses. We found the one she liked and gave our sizes and then waited almost 30 minutes for someone to ring us up so we could buy them! Furthermore... The dresses were made wrong and we all had the same issue with the same part of the dress on all 3 of them.
I've recently started using diffusers. I have one in my bedroom on my nightstand and it's been going strong for a couple of weeks now. Love having a scent to fall asleep and wake up to without worrying about having a candle lit while I'm sleeping.