ACE?

I know there are several people asking about this already on here but oh well. I have a friend who sells ACE and I'm wondering if its worth it for the price. I've managed to lose 30 lbs on my own before I started losing this app but I have been stuck at the same weight for several months now and its getting frustrating and I have 25 more lbs to go before I reach my goal. would taking ACE be a good option? I exercise at least 4 times a week and more on a good week but still not seeing the results.