Green tea leaf extract can help boost metabolism and promote healthy weight loss. You can obtain the energy you need to get through your day without the agitation that high-caffeine products may cause. Green Tea Extract is also a great source of antioxidants called catechins, which help support immune function, cardiovascular health, and fat loss. The combination of caffeine and L-theanine in our specialty Green Tea formula has synergistic effects to help promote brain function and better mood.