I'm curious as to why you think 6 months of supervised dieting with a dietary councelor is bull. I understand being at your wits end but you are much more likely to lose weight and keep it off by learning to eat properly. Meridia (or any other weight loss aid) isn't going to help you with that, especially if you don't obtain the prescription from a doctor who is willing to work with you along the way.
I realize how daunting a task losing 130 pounds can be and I'm not trying to preach to you. It is just that I've been at my wits end as well. I never lost weight and kept it off until I accepted the fact that I would have to learn to eat right, control my portions, and exercise. Something like Merida may help you lose weight, but it won't do the work for you.