Quercetin
Quercetin is a flavonoid, and like others of its kind, it gives color to several fruits and veggies. On our bodies, quercetin is a potent antioxidant that can help keep free radicals at bay and can strengthen our artery walls, amongst other things.
This healthy plant-exclusive compound is an admirable anti-inflammatory too and can help you reduce your blood pressure. We can find this compound in onions, shallots, peppers, tomatoes, and broccoli.