You can purchase it on this website. They have 15mg, 30mg, and 30.7mg. I would purchase the 15mg to start with see if it does anything for you. If it doesn't seem to do anything then 2 two pills at the same time once a day. That should do something. That is exactly what my doctor told me. He also said that dry mouth, jittery, sleeplessness, & heart palputations are what they do to you they are not the side affects they are what to expect. I've been doing pretty well on it I've been on it for 5 days it seems to work I do it incunjunction with weight watchers because that is the only way I know how to eat sensibly and I can eat what ever I want its very simple Check out their website
www.weighwatchers.com Believe it or not you can follow that program and lose weight I lost 39 pounds from it. But the phen helps curve your appetite. If you have anymore questions feel free to pm me.