My friend lost over 10lbs by doing a 10 day Green smoothie challenge. I would think maybe long term, replace one or 2 of your meals by smoothies?
I would recommend this book . It is free if you have a Kindle and has 40 Green Smoothie Recipes For Weight Loss and Detox .
http://www.amazon.com/dp/B00CXTMZWC/ref=cm_sw_r_an_am_at_ws_us?ie=UTF8