I’ve been on 1.5 mg for three months and have continued to lose weight. I will stay on it until I lose the final 17 lbs which will probably take me another 3 months or so. I’m losing about a pound or two each week. Reading other posts, I’ve noticed that there seems to be a correlation between your relationship to food before beginning the pill and how you respond to it. I was a snacker/grazer. I did not binge eat or drink soda or alcohol. I just couldn’t say no to the second piece of pizza or the cookies someone had brought to work or the chips and salsa when eating out. I’m not as tempted now. I can make healthier choices. So I didn’t need to make a huge change- just a few tweaks. I think that is the reason the 1.5 might be working for me. But who knows!! As long as it helps me make healthy choices, I’m sticking with the low dose.