I haven't heard of anyone taking weight lose pills and having them work. If it was that easy so much of America wouldn't be overweight. The new FDA approved pill has so many bad side effects its not worth taking it to lose an extra 1 -3 pounds month in my own opinion.
I've lost a lot of weight and I still eat all types of things, rice included. I don't believe in the whole you can't have carbs if you want to lose weight myth. I have a ton. Counting calories is the most important thing you can do. http://www.globalrph.com/dieting_calc.htm
See how many calories you should have if you want to lose weight, and then make sure to have that many. And of course exercising helps to raise your metabolism.