There are many good brands...
I tried Lean-R, Grenade, Animal Cuts... They are all good to me, but remember that a clean diet & regular cardio sessions are needed for fat loss: fat-burners are not "magic pills"!
If your girlfriend was looking to compete, then yes, she might consider Clen etc, but TBH, if it's only to get in shape & trim down, going the "natural way" is best...
Just my opinion of course!
