An everyday staple during immune season and year-round: Our Quercetin with Bromelain & Vitamin C (formerly QBC Plex) is specially designed to support your overall health and wellness.* Expert blend of quercetin, bromelain, and vitamin C for powerful immune and overall wellness support* Quercetin is a potent flavonoid; these compounds, found in fruits and vegetables, are known for their antioxidant properties Bromelain, an enzyme derived from pineapples, is believed to have many health benefits throughout the body One of the most well-known antioxidants, vitamin C also supports a healthy cardiovascular system*