PhenTabzTM is NOT an herbal supplement but rather a designer non prescription analog providing superior results without the side effects. We have had many health care professionals upgrade their patients to PhenTabzTM as the new weight loss product of choice. How does PhenTabzTM work. The patented ingredients in PhenTabzTM perform two essential functions. It increases the bodys mobility of fat while increasing metabolic rate. PhenTabzTM then greatly reduces appetite to ensure patients have control and motivation. The bottom line is that PhenTabzTM provides consistent significant weight loss and increased energy.