USN's Diet Fuel Ultralean represents the newest and most advanced technology for the reduction of body fat as well as the maintenance of lean muscle tissue.

This delicious, low-GI, low-kJ meal replacement formula provides you with a complete, nutritious meal for any time of the day. It contains all the essential nutrients in adequate quantities to ensure healthy, but also lasting weight-loss. The USN LeanSystem™ blend consists of N-Acetyl-L-Carnitine, HCA (Hydroxycitric acid) and a high level of bio-available Calcium, which have been shown to assist the weight-loss process through various effective mechanisms (excluding central nervous system stimulation).

The formula has a high fiber content to increase satiety levels. The reduction in hunger is further promoted through the addition of 25g High Biological Value Protein from various sources, which triggers a natural weight-loss hormone (PYY) in the body. The high quality protein substrates also assist in improving protein synthesis, regulating blood sugar levels to reduce cravings and improving overall health.