Hi. I recently purchased Cellucor's D4 "Extreme" and T7 "Extreme" from GNC and am hoping that it works. It is for weight loss. I have tried everything to lose some stubborn fat weight in the past, and NOTHING has worked (including diet and exercise). I am so frustrated. Together, these two supplements cost 120 dollars a month, so it is important that they work. From what I researched, they are okay, but I need the lowdown from someone who may know more than me. Am I wasting my money? Please let me know!!!