On what bouncer said about T3, you have to be really careful when using that because it messes with your thyroid. I wouldn't do anything that messes with the thyroid because you can really mees that up, for good.
I agree with the Clen though, but just be aware that it makes your hands shzke like crazy, and don't take it after 12 in the afternoon or you will never be able to sleep. You may have some insomnia with Winny, I did. Just take sleeping pills.