Getting enough vitamin C is important for overall health but the human body can't make it, so you have to get it through diet or supplements.1 Some studies show that vitamin C supplementation supports certain aspects of cardiovascular health.2
There's a long tradition of using quercetin to relieve the effects of seasonal immune challenges. In a randomized clinical trial, quercetin supplementation encouraged a healthy immune response in physically fit older adults.4
Another randomized controlled trial found similar results in trained athletes.5 And in doubleblind clinical trials, quercetin promoted a healthy inflammatory response, reduced oxidative stress and helped maintain overall health.6,7