diet aids anyone?

I am constantly trying to lose weight. I started doing an exercise for at least 15 minutes a day using stability ball as it helps to get rid of the fat specially in the belly area. I would love to get into a diet aidsto help curb my appetite because i can't get myself away from food. However, i am still confused of what diet aids should i get. Some people said there are diet aids that are dangerous and in fact there is a news about it in China where person has died while some are having liver disorders. Well, it probably depends on the product you took. My best bet is to search the certain product first before using.