Jack3d won't affect weight loss its a pre-workout energy drink, it will help your workouts thought. My suggestion is OxyElite Pro from USPlabs it helped me lose 17 pounds over the course of 6 weeks with solid diet and exercise granted some of it was muscle but im happy with it and it is a very good fat burner moreso then recreate. If possible id do Jack3d, OxyElite Pro, and Anabolic Pump that would yield good results, but in the end you also have to a solid well rounded diet and eat below maintence to lose weight its all about calories in/calories out if the calories out are less then calories in you will lose weight supplements just add a little touch.