They are all pretty much the same except Meridia. Don't bother with that. It doesn't control hunger(Didn't do shit for me). Only helps you eat less. You can find Phentermines in 37.5 (something like that). Good choice but I will tell you that the weight will come right back on so it's not really even worth it but if she insists on going that way. Take Phentermine....buy some Xenical with it (expensive and watch for some uhhhhh gaseous sides LOL) and take flax seed oil
Goodluck
Star