Quercetin is one the most popular antioxidants for its ability to combat oxidative damage created by increasing levels of free radicals, leading to superior immune-system response. Mega Quercetin delivers 1,000mg of plant-based quercetin combined with 100mg of l-glutathione, also known as the master antioxidant. The synergistic effect of these nutrients results in a daily cyclic-effect that supports body detoxification, healthy circulation, and healthy immune response. If youre looking for an overall antioxidant formula to target oxidation from all angles, look no further!