Adipex is what I have used- and I love it. Most Drs will not prescribe it unless they feel like you are obese. becareful though- you can loose too much too quickly. Be sure to get your calories in- as it is easy to go days without eating. I have to force myself to eat just to sure to get some calories in. Most importantly, without a lifestyle change it will not stay off and could be harmful to your body.
(Although I am not trying to loose any more weight, I still use half tablets from time to time to maintain my desired weight.)
As long as you use it as a tool, along with good nutrition and exercise- you will be very sucessful. It does come in a generic. At costco, it costs under 16 dollars. BTW, you do not have to be a member of costco to use their pharmacy. When you go inside Costco- tell them you are going to the pharmacy- then they will let you by. Of course, they will place things you want along the way to the pharmacy- in hopes that you buy a membership..and I love my membership!
Good luck& God Bless!