I asked this question before but no one would answer seriously.mega t diet?

I asked my bf to bring me home some green tea extract he brought home mega t pills with green tea and some berry of sorts. I wanted to return them but my friend said they really work. Facts:I work out and eat right. (2x a day an hour each day of cardio and kickboxing) drink plenty of cold water and green tea and have actually seen results in this last month and a half. (2 sizes down) started at 138 pounds now at 123...will they help more and if I stop taking them will I just start gaining weight?! Am I better off without them? Experiences??