Zest Active is your everyday nutritional boost to support energyimmune supportbrain function & muscle function.  Zest Active contains Taurine, Biotin & Vitamin B12 which work in synergy to improve metabolic function & energy production. These are the powerhouse of Zest & help with energy generation in the heartmuscles & nervous systems.Vitamin B12 also aids in detoxification. Zest Active contains Wellmune by The Kerry Group which prepares the immune system to fight infectionreducing inflammation & improving recovery. Zest Active also contains L-Glutamine & L-Lysine which work to support the immune system & supply energy for muscle recovery. Choline aids in mental performance and memory while Vitamin D promotes cognitive function & mental clarity. Zest Active also contains 100mg of L-Theanine which can aid in mood & help reduce stress.