Has anyone had success with diet pills? I had lost 10 lbs. over 2 months using portion control and some exercise. Then I added Alli thinking I would lose faster. Instead, I gained 4 lbs in a week so I quit that. Then I tried Phenphedrine which I have been on almost a week now and it looks like I have gained about 2 lbs and I am ready to quit. Am I giving these things enough time to work? Do they work better over a longer period of time or do they not work at all? Anyone know?