I knew a girl who used the hoodia lollipops a long time ago (I know, you can already tell this 'review' is going to be soo helpful, right?).
She DID lose weight while she was using them, but to be honest I think it was just the fact she was eating regular meals (2 - 3 a day), and then not snacking on anything else but the lollipops. And she was counting calories, so obviously that's going to help, lol. Either way, she was eating less overall.