trying to lose weight

I know some people are trying to lose weight include me, my husband who is a little over weight and a good friend at work. We are all trying our best not to eat a lot, cutting our calories. My friend used to not check the nutrition facts now she is reading it first. Still we can not lose our excess weight because during lunch time we are eating a lot we can’t control ourselves, we are still struggling. I am thinking about trying alli diet pills; I have heard that is good and effective.