Weight Management Supports Optimal Body Composition Energy and Alertness NOW T-Lean Extreme features GreenSelect Phytosome, a standardized green tea extract with superior bioavailability. GreenSelect Phytosome has been clinically tested and shown to promote a healthy metabolic rate and support weight management when used alongside a well-balanced diet and exercise. ForsLean, another clinically tested ingredient, has been included to support the production of muscle tissue, while facilitating the breakdown of adipose tissue for use in energy production. Natural Caffeine energizes and boosts mental alertness.