fat burners

I was listening to a video on line and the guy was talking about yohimbine and said it's one of the best fat burners and pre workouts you could use. He also said they might be banning it soon and I should stock up on it. Anyone try this and how did it work

Hey what are the differences between using n2slin and using a traditional fat burner. I have been reading the ingredients in these products and doing my own research but I am still super confused and hoping you guys can fill me in so I can learn about it.