Powerful antioxidants for immune support.*This synergistic formula combines the antioxidant support of vitamin C with citrus bioflavonoids and the proteolytic-enzyme support of bromelain. A powerful antioxidant, vitamin C supports healthy immune system responses.* Bromelain, an enzyme from pineapple, supports the body'snatural healingresponse* Flavonoids are key antioxidants beneficial for respiratory health and the body'scytokine responses.* Each of these ingredients are powerful on their own, but when combined provide superior support for the immune system.*