Zest Active is a super supplement of 25 scientifically formulated ingredients clinically proven to strengthen the immune system, boost energy and improve mental well-being. Trusted by athletes, fitness enthusiasts, the health conscious and people with busy lifestyles, you can count on Zest Active to help you unlock your potential every day. Each handy stick sachet contains Wellmune, L-Lysine, L-Theanine and Taurine for energy and immune support, and enhanced mental clarity and muscle function.